From a1a81e37996619798bb44f23ac2f2c0ed67d5f66 Mon Sep 17 00:00:00 2001
From: Pranav Raj S <pranavrajs@gmail.com>
Date: Sun, 5 Apr 2020 22:11:27 +0530
Subject: [PATCH] Feature: Twilio SMS Channel (#658)

Twilio SMS Channel
Fixes :  #350
---
 Gemfile                                       |   4 +-
 Gemfile.lock                                  |  33 ++--
 app/builders/contact_builder.rb               |  37 +++++
 .../channels/twilio_channels_controller.rb    |  50 ++++++
 app/controllers/twilio/callback_controller.rb |  29 ++++
 .../dashboard/api/channel/twilioChannel.js    |   9 ++
 .../assets/images/channels/twilio.png         | Bin 0 -> 12215 bytes
 .../components/layout/SidebarItem.vue         |   4 +
 .../components/widgets/ChannelItem.vue        |   6 +-
 .../dashboard/i18n/locale/en/inboxMgmt.json   |  29 ++++
 .../dashboard/settings/agents/AddAgent.vue    |  10 +-
 .../dashboard/settings/inbox/ChannelList.vue  |   9 +-
 .../dashboard/settings/inbox/FinishSetup.vue  |   2 +
 .../routes/dashboard/settings/inbox/Index.vue |   3 +
 .../dashboard/settings/inbox/Settings.vue     |  10 +-
 .../settings/inbox/channel-factory.js         |   2 +
 .../settings/inbox/channels/Twilio.vue        | 143 ++++++++++++++++++
 .../settings/inbox/channels/Website.vue       |  12 +-
 .../dashboard/store/modules/inboxes.js        |  13 ++
 app/javascript/shared/mixins/alertMixin.js    |   8 +
 app/javascript/shared/mixins/configMixin.js   |   7 +
 app/models/account.rb                         |   3 +-
 app/models/channel/twilio_sms.rb              |  33 ++++
 app/models/channel/twitter_profile.rb         |   4 +
 app/models/message.rb                         |   2 +
 app/models/webhook.rb                         |   4 +
 .../twilio/incoming_message_service.rb        |  77 ++++++++++
 .../twilio/outgoing_message_service.rb        |  34 +++++
 app/services/twilio/webhook_setup_service.rb  |  35 +++++
 .../twilio_channels/create.json.jbuilder      |   6 +
 .../v1/accounts/inboxes/index.json.jbuilder   |   1 +
 app/views/layouts/vueapp.html.erb             |   1 +
 config/routes.rb                              |   8 +-
 ...0200330071706_create_channel_twilio_sms.rb |  11 ++
 ...00404135009_add_unique_validation_index.rb |   7 +
 db/schema.rb                                  |  14 +-
 spec/builders/contact_builder_spec.rb         |  40 +++++
 .../twilio_channels_controller_spec.rb        |  76 ++++++++++
 .../twilio/callbacks_controller_spec.rb       |  18 +++
 .../twitter/callbacks_controller_spec.rb      |   2 +-
 spec/factories/channel/twilio_sms.rb          |   9 ++
 .../twilio/incoming_message_service_spec.rb   |  39 +++++
 .../twilio/outgoing_message_service_spec.rb   |  59 ++++++++
 .../twilio/webhook_setup_service_spec.rb      |  48 ++++++
 44 files changed, 918 insertions(+), 33 deletions(-)
 create mode 100644 app/builders/contact_builder.rb
 create mode 100644 app/controllers/api/v1/accounts/channels/twilio_channels_controller.rb
 create mode 100644 app/controllers/twilio/callback_controller.rb
 create mode 100644 app/javascript/dashboard/api/channel/twilioChannel.js
 create mode 100644 app/javascript/dashboard/assets/images/channels/twilio.png
 create mode 100644 app/javascript/dashboard/routes/dashboard/settings/inbox/channels/Twilio.vue
 create mode 100644 app/javascript/shared/mixins/alertMixin.js
 create mode 100644 app/javascript/shared/mixins/configMixin.js
 create mode 100644 app/models/channel/twilio_sms.rb
 create mode 100644 app/services/twilio/incoming_message_service.rb
 create mode 100644 app/services/twilio/outgoing_message_service.rb
 create mode 100644 app/services/twilio/webhook_setup_service.rb
 create mode 100644 app/views/api/v1/accounts/channels/twilio_channels/create.json.jbuilder
 create mode 100644 db/migrate/20200330071706_create_channel_twilio_sms.rb
 create mode 100644 db/migrate/20200404135009_add_unique_validation_index.rb
 create mode 100644 spec/builders/contact_builder_spec.rb
 create mode 100644 spec/controllers/api/v1/accounts/channels/twilio_channels_controller_spec.rb
 create mode 100644 spec/controllers/twilio/callbacks_controller_spec.rb
 create mode 100644 spec/factories/channel/twilio_sms.rb
 create mode 100644 spec/services/twilio/incoming_message_service_spec.rb
 create mode 100644 spec/services/twilio/outgoing_message_service_spec.rb
 create mode 100644 spec/services/twilio/webhook_setup_service_spec.rb

diff --git a/Gemfile b/Gemfile
index 4a826347c..4225f2904 100644
--- a/Gemfile
+++ b/Gemfile
@@ -25,7 +25,7 @@ gem 'uglifier'
 
 ##-- for active storage --##
 gem 'aws-sdk-s3', require: false
-gem 'azure-storage', require: false
+gem 'azure-storage-blob', require: false
 gem 'google-cloud-storage', require: false
 gem 'mini_magick'
 
@@ -62,9 +62,9 @@ gem 'chargebee'
 ##--- gems for channels ---##
 gem 'facebook-messenger'
 gem 'telegram-bot-ruby'
+gem 'twilio-ruby', '~> 5.32.0'
 # twitty will handle subscription of twitter account events
 gem 'twitty', git: 'https://github.com/chatwoot/twitty'
-
 # facebook client
 gem 'koala'
 # Random name generator
diff --git a/Gemfile.lock b/Gemfile.lock
index a3374ffea..0ad798ef4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,15 +102,13 @@ GEM
       descendants_tracker (~> 0.0.4)
       ice_nine (~> 0.11.0)
       thread_safe (~> 0.3, >= 0.3.1)
-    azure-core (0.1.15)
-      faraday (~> 0.9)
-      faraday_middleware (~> 0.10)
-      nokogiri (~> 1.6)
-    azure-storage (0.15.0.preview)
-      azure-core (~> 0.1)
-      faraday (~> 0.9)
-      faraday_middleware (~> 0.10)
-      nokogiri (~> 1.6, >= 1.6.8)
+    azure-storage-blob (2.0.0)
+      azure-storage-common (~> 2.0)
+      nokogiri (~> 1.10.4)
+    azure-storage-common (2.0.1)
+      faraday (~> 1.0)
+      faraday_middleware (~> 1.0.0.rc1)
+      nokogiri (~> 1.10.4)
     bcrypt (3.1.13)
     bindex (0.8.1)
     bootsnap (1.4.6)
@@ -172,10 +170,10 @@ GEM
       railties (>= 4.2.0)
     faker (2.11.0)
       i18n (>= 1.6, < 2)
-    faraday (0.17.3)
+    faraday (1.0.1)
       multipart-post (>= 1.2, < 3)
-    faraday_middleware (0.14.0)
-      faraday (>= 0.7.4, < 1.0)
+    faraday_middleware (1.0.0)
+      faraday (~> 1.0)
     ffi (1.12.2)
     flag_shih_tzu (0.3.23)
     foreman (0.87.1)
@@ -410,8 +408,8 @@ GEM
       activerecord (>= 4)
       activesupport (>= 4)
     semantic_range (2.3.0)
-    sentry-raven (2.13.0)
-      faraday (>= 0.7.6, < 1.0)
+    sentry-raven (3.0.0)
+      faraday (>= 1.0)
     shoulda-matchers (4.3.0)
       activesupport (>= 4.2.0)
     sidekiq (6.0.6)
@@ -449,6 +447,10 @@ GEM
     time_diff (0.3.0)
       activesupport
       i18n
+    twilio-ruby (5.32.0)
+      faraday (~> 1.0.0)
+      jwt (>= 1.5, <= 2.5)
+      nokogiri (>= 1.6, < 2.0)
     tzinfo (1.2.7)
       thread_safe (~> 0.1)
     tzinfo-data (1.2019.3)
@@ -496,7 +498,7 @@ DEPENDENCIES
   annotate
   attr_extras
   aws-sdk-s3
-  azure-storage
+  azure-storage-blob
   bootsnap
   brakeman
   browser
@@ -553,6 +555,7 @@ DEPENDENCIES
   spring-watcher-listen
   telegram-bot-ruby
   time_diff
+  twilio-ruby (~> 5.32.0)
   twitty!
   tzinfo-data
   uglifier
diff --git a/app/builders/contact_builder.rb b/app/builders/contact_builder.rb
new file mode 100644
index 000000000..70b994ac2
--- /dev/null
+++ b/app/builders/contact_builder.rb
@@ -0,0 +1,37 @@
+class ContactBuilder
+  pattr_initialize [:source_id!, :inbox!, :contact_attributes!]
+
+  def perform
+    contact_inbox = inbox.contact_inboxes.find_by(source_id: source_id)
+    return contact_inbox if contact_inbox
+
+    build_contact
+  end
+
+  private
+
+  def account
+    @account ||= inbox.account
+  end
+
+  def build_contact
+    ActiveRecord::Base.transaction do
+      contact = account.contacts.create!(
+        name: contact_attributes[:name],
+        phone_number: contact_attributes[:phone_number],
+        email: contact_attributes[:email],
+        identifier: contact_attributes[:identifier],
+        additional_attributes: contact_attributes[:identifier]
+      )
+      contact_inbox = ::ContactInbox.create!(
+        contact_id: contact.id,
+        inbox_id: inbox.id,
+        source_id: source_id
+      )
+      ::ContactAvatarJob.perform_later(contact, contact_attributes[:avatar_url]) if contact_attributes[:avatar_url]
+      contact_inbox
+    rescue StandardError => e
+      Rails.logger e
+    end
+  end
+end
diff --git a/app/controllers/api/v1/accounts/channels/twilio_channels_controller.rb b/app/controllers/api/v1/accounts/channels/twilio_channels_controller.rb
new file mode 100644
index 000000000..c3d6554fd
--- /dev/null
+++ b/app/controllers/api/v1/accounts/channels/twilio_channels_controller.rb
@@ -0,0 +1,50 @@
+class Api::V1::Accounts::Channels::TwilioChannelsController < Api::BaseController
+  before_action :authorize_request
+
+  def create
+    authenticate_twilio
+    build_inbox
+    setup_webhooks
+  rescue Twilio::REST::TwilioError => e
+    render_could_not_create_error(e.message)
+  rescue StandardError => e
+    render_could_not_create_error(e.message)
+  end
+
+  private
+
+  def authorize_request
+    authorize ::Inbox
+  end
+
+  def authenticate_twilio
+    client = Twilio::REST::Client.new(permitted_params[:account_sid], permitted_params[:auth_token])
+    client.messages.list(limit: 1)
+  end
+
+  def setup_webhooks
+    ::Twilio::WebhookSetupService.new(inbox: @inbox).perform
+  end
+
+  def build_inbox
+    ActiveRecord::Base.transaction do
+      twilio_sms = current_account.twilio_sms.create(
+        account_sid: permitted_params[:account_sid],
+        auth_token: permitted_params[:auth_token],
+        phone_number: permitted_params[:phone_number]
+      )
+      @inbox = current_account.inboxes.create(
+        name: permitted_params[:name],
+        channel: twilio_sms
+      )
+    rescue StandardError => e
+      render_could_not_create_error(e.message)
+    end
+  end
+
+  def permitted_params
+    params.require(:twilio_channel).permit(
+      :account_id, :phone_number, :account_sid, :auth_token, :name
+    )
+  end
+end
diff --git a/app/controllers/twilio/callback_controller.rb b/app/controllers/twilio/callback_controller.rb
new file mode 100644
index 000000000..f6cb5356c
--- /dev/null
+++ b/app/controllers/twilio/callback_controller.rb
@@ -0,0 +1,29 @@
+class Twilio::CallbackController < ApplicationController
+  def create
+    ::Twilio::IncomingMessageService.new(params: permitted_params).perform
+
+    head :no_content
+  end
+
+  private
+
+  def permitted_params
+    params.permit(
+      :ApiVersion,
+      :SmsSid,
+      :From,
+      :ToState,
+      :ToZip,
+      :AccountSid,
+      :MessageSid,
+      :FromCountry,
+      :ToCity,
+      :FromCity,
+      :To,
+      :FromZip,
+      :Body,
+      :ToCountry,
+      :FromState
+    )
+  end
+end
diff --git a/app/javascript/dashboard/api/channel/twilioChannel.js b/app/javascript/dashboard/api/channel/twilioChannel.js
new file mode 100644
index 000000000..a688a1f11
--- /dev/null
+++ b/app/javascript/dashboard/api/channel/twilioChannel.js
@@ -0,0 +1,9 @@
+import ApiClient from '../ApiClient';
+
+class TwilioChannel extends ApiClient {
+  constructor() {
+    super('channels/twilio_channel', { accountScoped: true });
+  }
+}
+
+export default new TwilioChannel();
diff --git a/app/javascript/dashboard/assets/images/channels/twilio.png b/app/javascript/dashboard/assets/images/channels/twilio.png
new file mode 100644
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z;Sya};YydcU^DccPr}1Vu?&LvR!+_Y9m1VNzA00OlNZ+<obVcAGV*|M1ByaCxIQ}W
z!+q03UZK3Do&?EzWH@W&ks{eAes!|UUtdrSmf#1r-+=eI8xnO*#SBAtN9<LR1kK?d
zys~dpoI+QOS$ii)mMkd@`7faAoT2$@-?doC%Nqc2fuEmwbf6pa(+W#AGXGJoe>w`?
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literal 0
HcmV?d00001

diff --git a/app/javascript/dashboard/components/layout/SidebarItem.vue b/app/javascript/dashboard/components/layout/SidebarItem.vue
index 66ce6b399..8a3932057 100644
--- a/app/javascript/dashboard/components/layout/SidebarItem.vue
+++ b/app/javascript/dashboard/components/layout/SidebarItem.vue
@@ -56,6 +56,7 @@ const INBOX_TYPES = {
   WEB: 'Channel::WebWidget',
   FB: 'Channel::FacebookPage',
   TWITTER: 'Channel::TwitterProfile',
+  TWILIO: 'Channel::TwilioSms',
 };
 const getInboxClassByType = type => {
   switch (type) {
@@ -68,6 +69,9 @@ const getInboxClassByType = type => {
     case INBOX_TYPES.TWITTER:
       return 'ion-social-twitter';
 
+    case INBOX_TYPES.TWILIO:
+      return 'ion-android-textsms';
+
     default:
       return '';
   }
diff --git a/app/javascript/dashboard/components/widgets/ChannelItem.vue b/app/javascript/dashboard/components/widgets/ChannelItem.vue
index da22f71bd..948bff103 100644
--- a/app/javascript/dashboard/components/widgets/ChannelItem.vue
+++ b/app/javascript/dashboard/components/widgets/ChannelItem.vue
@@ -24,6 +24,10 @@
       v-if="channel === 'website'"
       src="~dashboard/assets/images/channels/website.png"
     />
+    <img
+      v-if="channel === 'twilio'"
+      src="~dashboard/assets/images/channels/twilio.png"
+    />
     <h3 class="channel__title">
       {{ channel }}
     </h3>
@@ -39,7 +43,7 @@ export default {
   },
   methods: {
     isActive(channel) {
-      return ['facebook', 'website', 'twitter'].includes(channel);
+      return ['facebook', 'website', 'twitter', 'twilio'].includes(channel);
     },
     onItemClick() {
       if (this.isActive(this.channel)) {
diff --git a/app/javascript/dashboard/i18n/locale/en/inboxMgmt.json b/app/javascript/dashboard/i18n/locale/en/inboxMgmt.json
index d84be8f1e..0dcdd60d5 100644
--- a/app/javascript/dashboard/i18n/locale/en/inboxMgmt.json
+++ b/app/javascript/dashboard/i18n/locale/en/inboxMgmt.json
@@ -21,6 +21,7 @@
       "WEBSITE_CHANNEL": {
         "TITLE": "Website channel",
         "DESC": "Create a channel for your website and start supporting your customers via our website widget.",
+        "LOADING_MESSAGE": "Creating Website Support Channel",
         "CHANNEL_NAME": {
           "LABEL": "Website Name",
           "PLACEHOLDER": "Enter your website name (eg: Acme Inc)"
@@ -35,6 +36,34 @@
         },
         "SUBMIT_BUTTON":"Create inbox"
       },
+      "TWILIO": {
+        "TITLE": "Twilio SMS Channel",
+        "DESC": "Integrate Twilio and start supporting your customers via SMS.",
+        "ACCOUNT_SID": {
+          "LABEL": "Account SID",
+          "PLACEHOLDER": "Please enter your Twilio Account SID",
+          "ERROR": "This field is required"
+        },
+        "AUTH_TOKEN": {
+          "LABEL": "Auth Token",
+          "PLACEHOLDER": "Please enter your Twilio Auth Token",
+          "ERROR": "This field is required"
+        },
+        "CHANNEL_NAME": {
+          "LABEL": "Channel Name",
+          "PLACEHOLDER": "Please enter a channel name",
+          "ERROR": "This field is required"
+        },
+        "PHONE_NUMBER": {
+          "LABEL": "Phone number",
+          "PLACEHOLDER": "Please enter the phone number from which message will be sent.",
+          "ERROR": "Please enter a valid value. Phone number should start with `+` sign."
+        },
+        "SUBMIT_BUTTON": "Create Twilio Channel",
+        "API": {
+          "ERROR_MESSAGE": "We were not able to authenticate Twilio credentials, please try again"
+        }
+      },
       "AUTH": {
         "TITLE": "Channels",
         "DESC": "Currently we support Website live chat widgets, Facebook Pages and Twitter profiles as platforms. We have more platforms like Whatsapp, Email, Telegram and Line in the works, which will be out soon."
diff --git a/app/javascript/dashboard/routes/dashboard/settings/agents/AddAgent.vue b/app/javascript/dashboard/routes/dashboard/settings/agents/AddAgent.vue
index 728d753d9..0fa469d9b 100644
--- a/app/javascript/dashboard/routes/dashboard/settings/agents/AddAgent.vue
+++ b/app/javascript/dashboard/routes/dashboard/settings/agents/AddAgent.vue
@@ -128,11 +128,11 @@ export default {
         this.showAlert(this.$t('AGENT_MGMT.ADD.API.SUCCESS_MESSAGE'));
         this.onClose();
       } catch (error) {
-          if (error.response.status === 422) {
-            this.showAlert(this.$t('AGENT_MGMT.ADD.API.EXIST_MESSAGE'));
-          } else {
-            this.showAlert(this.$t('AGENT_MGMT.ADD.API.ERROR_MESSAGE'));
-          }
+        if (error.response.status === 422) {
+          this.showAlert(this.$t('AGENT_MGMT.ADD.API.EXIST_MESSAGE'));
+        } else {
+          this.showAlert(this.$t('AGENT_MGMT.ADD.API.ERROR_MESSAGE'));
+        }
       }
     },
   },
diff --git a/app/javascript/dashboard/routes/dashboard/settings/inbox/ChannelList.vue b/app/javascript/dashboard/routes/dashboard/settings/inbox/ChannelList.vue
index 3b3ba9dc3..12bba91d3 100644
--- a/app/javascript/dashboard/routes/dashboard/settings/inbox/ChannelList.vue
+++ b/app/javascript/dashboard/routes/dashboard/settings/inbox/ChannelList.vue
@@ -27,7 +27,14 @@ export default {
   },
   data() {
     return {
-      channelList: ['website', 'facebook', 'twitter', 'telegram', 'line'],
+      channelList: [
+        'website',
+        'facebook',
+        'twitter',
+        'twilio',
+        'telegram',
+        'line',
+      ],
     };
   },
   methods: {
diff --git a/app/javascript/dashboard/routes/dashboard/settings/inbox/FinishSetup.vue b/app/javascript/dashboard/routes/dashboard/settings/inbox/FinishSetup.vue
index 9da9ccfab..accba4cfb 100644
--- a/app/javascript/dashboard/routes/dashboard/settings/inbox/FinishSetup.vue
+++ b/app/javascript/dashboard/routes/dashboard/settings/inbox/FinishSetup.vue
@@ -28,12 +28,14 @@
 </template>
 
 <script>
+import configMixin from 'shared/mixins/configMixin';
 import EmptyState from '../../../../components/widgets/EmptyState';
 
 export default {
   components: {
     EmptyState,
   },
+  mixins: [configMixin],
   computed: {
     currentInbox() {
       return this.$store.getters['inboxes/getInbox'](
diff --git a/app/javascript/dashboard/routes/dashboard/settings/inbox/Index.vue b/app/javascript/dashboard/routes/dashboard/settings/inbox/Index.vue
index 833e30b38..8efa5075a 100644
--- a/app/javascript/dashboard/routes/dashboard/settings/inbox/Index.vue
+++ b/app/javascript/dashboard/routes/dashboard/settings/inbox/Index.vue
@@ -42,6 +42,9 @@
                 <span v-if="item.channel_type === 'Channel::TwitterProfile'">
                   Twitter
                 </span>
+                <span v-if="item.channel_type === 'Channel::TwilioSms'">
+                  Twilio SMS
+                </span>
               </td>
 
               <!-- Action Buttons -->
diff --git a/app/javascript/dashboard/routes/dashboard/settings/inbox/Settings.vue b/app/javascript/dashboard/routes/dashboard/settings/inbox/Settings.vue
index 447bd5438..5f3ad7937 100644
--- a/app/javascript/dashboard/routes/dashboard/settings/inbox/Settings.vue
+++ b/app/javascript/dashboard/routes/dashboard/settings/inbox/Settings.vue
@@ -2,7 +2,7 @@
   <div class="settings columns container">
     <woot-modal-header
       :header-image="inbox.avatarUrl"
-      :header-title="inbox.name"
+      :header-title="inboxName"
     />
     <div
       v-if="inbox.channel_type === 'Channel::FacebookPage'"
@@ -87,6 +87,7 @@
 import { mapGetters } from 'vuex';
 import { createMessengerScript } from 'dashboard/helper/scriptGenerator';
 import { Compact } from 'vue-color';
+import configMixin from 'shared/mixins/configMixin';
 import SettingsFormHeader from '../../../../components/SettingsFormHeader.vue';
 
 export default {
@@ -94,6 +95,7 @@ export default {
     Compact,
     SettingsFormHeader,
   },
+  mixins: [configMixin],
   data() {
     return {
       selectedAgents: [],
@@ -113,6 +115,12 @@ export default {
     inbox() {
       return this.$store.getters['inboxes/getInbox'](this.currentInboxId);
     },
+    inboxName() {
+      if (this.inbox.channel_type === 'Channel::TwilioSms') {
+        return `${this.inbox.name} (${this.inbox.phone_number})`;
+      }
+      return this.inbox.name;
+    },
     messengerScript() {
       return createMessengerScript(this.inbox.page_id);
     },
diff --git a/app/javascript/dashboard/routes/dashboard/settings/inbox/channel-factory.js b/app/javascript/dashboard/routes/dashboard/settings/inbox/channel-factory.js
index 6e2dc3403..9d15b3664 100644
--- a/app/javascript/dashboard/routes/dashboard/settings/inbox/channel-factory.js
+++ b/app/javascript/dashboard/routes/dashboard/settings/inbox/channel-factory.js
@@ -1,11 +1,13 @@
 import Facebook from './channels/Facebook';
 import Website from './channels/Website';
 import Twitter from './channels/Twitter';
+import Twilio from './channels/Twilio';
 
 const channelViewList = {
   facebook: Facebook,
   website: Website,
   twitter: Twitter,
+  twilio: Twilio,
 };
 
 export default {
diff --git a/app/javascript/dashboard/routes/dashboard/settings/inbox/channels/Twilio.vue b/app/javascript/dashboard/routes/dashboard/settings/inbox/channels/Twilio.vue
new file mode 100644
index 000000000..399651b92
--- /dev/null
+++ b/app/javascript/dashboard/routes/dashboard/settings/inbox/channels/Twilio.vue
@@ -0,0 +1,143 @@
+<template>
+  <div class="wizard-body small-9 columns">
+    <page-header
+      :header-title="$t('INBOX_MGMT.ADD.TWILIO.TITLE')"
+      :header-content="$t('INBOX_MGMT.ADD.TWILIO.DESC')"
+    />
+    <form class="row" @submit.prevent="createChannel()">
+      <div class="medium-8 columns">
+        <label :class="{ error: $v.channelName.$error }">
+          {{ $t('INBOX_MGMT.ADD.TWILIO.CHANNEL_NAME.LABEL') }}
+          <input
+            v-model.trim="channelName"
+            type="text"
+            :placeholder="$t('INBOX_MGMT.ADD.TWILIO.CHANNEL_NAME.PLACEHOLDER')"
+            @blur="$v.channelName.$touch"
+          />
+          <span v-if="$v.channelName.$error" class="message">
+            {{ $t('INBOX_MGMT.ADD.TWILIO.CHANNEL_NAME.ERROR') }}
+          </span>
+        </label>
+      </div>
+
+      <div class="medium-8 columns">
+        <label :class="{ error: $v.phoneNumber.$error }">
+          {{ $t('INBOX_MGMT.ADD.TWILIO.PHONE_NUMBER.LABEL') }}
+          <input
+            v-model.trim="phoneNumber"
+            type="text"
+            :placeholder="$t('INBOX_MGMT.ADD.TWILIO.PHONE_NUMBER.PLACEHOLDER')"
+            @blur="$v.phoneNumber.$touch"
+          />
+          <span v-if="$v.phoneNumber.$error" class="message">
+            {{ $t('INBOX_MGMT.ADD.TWILIO.PHONE_NUMBER.ERROR') }}
+          </span>
+        </label>
+      </div>
+
+      <div class="medium-8 columns">
+        <label :class="{ error: $v.accountSID.$error }">
+          {{ $t('INBOX_MGMT.ADD.TWILIO.ACCOUNT_SID.LABEL') }}
+          <input
+            v-model.trim="accountSID"
+            type="text"
+            :placeholder="$t('INBOX_MGMT.ADD.TWILIO.ACCOUNT_SID.PLACEHOLDER')"
+            @blur="$v.accountSID.$touch"
+          />
+          <span v-if="$v.accountSID.$error" class="message">
+            {{ $t('INBOX_MGMT.ADD.TWILIO.ACCOUNT_SID.ERROR') }}
+          </span>
+        </label>
+      </div>
+      <div class="medium-8 columns">
+        <label :class="{ error: $v.authToken.$error }">
+          {{ $t('INBOX_MGMT.ADD.TWILIO.AUTH_TOKEN.LABEL') }}
+          <input
+            v-model.trim="authToken"
+            type="text"
+            :placeholder="$t('INBOX_MGMT.ADD.TWILIO.AUTH_TOKEN.PLACEHOLDER')"
+            @blur="$v.authToken.$touch"
+          />
+          <span v-if="$v.authToken.$error" class="message">
+            {{ $t('INBOX_MGMT.ADD.TWILIO.AUTH_TOKEN.ERROR') }}
+          </span>
+        </label>
+      </div>
+
+      <div class="medium-12 columns">
+        <woot-submit-button
+          :loading="uiFlags.isCreating"
+          :button-text="$t('INBOX_MGMT.ADD.TWILIO.SUBMIT_BUTTON')"
+        />
+      </div>
+    </form>
+  </div>
+</template>
+
+<script>
+import { mapGetters } from 'vuex';
+import alertMixin from 'shared/mixins/alertMixin';
+import { required } from 'vuelidate/lib/validators';
+import router from '../../../../index';
+import PageHeader from '../../SettingsSubPageHeader';
+
+const shouldStartWithPlusSign = (value = '') => value.startsWith('+');
+
+export default {
+  components: {
+    PageHeader,
+  },
+  mixins: [alertMixin],
+  data() {
+    return {
+      accountSID: '',
+      authToken: '',
+      channelName: '',
+      phoneNumber: '',
+    };
+  },
+  computed: {
+    ...mapGetters({
+      uiFlags: 'inboxes/getUIFlags',
+    }),
+  },
+  validations: {
+    channelName: { required },
+    phoneNumber: { required, shouldStartWithPlusSign },
+    authToken: { required },
+    accountSID: { required },
+  },
+  methods: {
+    async createChannel() {
+      this.$v.$touch();
+      if (this.$v.$invalid) {
+        return;
+      }
+
+      try {
+        const twilioChannel = await this.$store.dispatch(
+          'inboxes/createTwilioChannel',
+          {
+            twilio_channel: {
+              name: this.channelName,
+              account_sid: this.accountSID,
+              auth_token: this.authToken,
+              phone_number: this.phoneNumber,
+            },
+          }
+        );
+
+        router.replace({
+          name: 'settings_inboxes_add_agents',
+          params: {
+            page: 'new',
+            inbox_id: twilioChannel.id,
+          },
+        });
+      } catch (error) {
+        this.showAlert(this.$t('INBOX_MGMT.ADD.TWILIO.API.ERROR_MESSAGE'));
+      }
+    },
+  },
+};
+</script>
diff --git a/app/javascript/dashboard/routes/dashboard/settings/inbox/channels/Website.vue b/app/javascript/dashboard/routes/dashboard/settings/inbox/channels/Website.vue
index 8641210db..83bf17866 100644
--- a/app/javascript/dashboard/routes/dashboard/settings/inbox/channels/Website.vue
+++ b/app/javascript/dashboard/routes/dashboard/settings/inbox/channels/Website.vue
@@ -5,11 +5,15 @@
       :header-content="$t('INBOX_MGMT.ADD.WEBSITE_CHANNEL.DESC')"
     />
     <woot-loading-state
-      v-if="isCreating"
-      message="Creating Website Support Channel"
+      v-if="uiFlags.isCreating"
+      :message="$('INBOX_MGMT.ADD.WEBSITE_CHANNEL.LOADING_MESSAGE')"
     >
     </woot-loading-state>
-    <form v-if="!isCreating" class="row" @submit.prevent="createChannel()">
+    <form
+      v-if="!uiFlags.isCreating"
+      class="row"
+      @submit.prevent="createChannel()"
+    >
       <div class="medium-12 columns">
         <label>
           {{ $t('INBOX_MGMT.ADD.WEBSITE_CHANNEL.CHANNEL_NAME.LABEL') }}
@@ -45,6 +49,7 @@
       <div class="modal-footer">
         <div class="medium-12 columns">
           <woot-submit-button
+            :loading="uiFlags.isCreating"
             :disabled="!websiteUrl || !websiteName"
             :button-text="$t('INBOX_MGMT.ADD.WEBSITE_CHANNEL.SUBMIT_BUTTON')"
           />
@@ -70,7 +75,6 @@ export default {
       websiteName: '',
       websiteUrl: '',
       widgetColor: { hex: '#009CE0' },
-      isCreating: false,
     };
   },
   computed: {
diff --git a/app/javascript/dashboard/store/modules/inboxes.js b/app/javascript/dashboard/store/modules/inboxes.js
index d89473fb9..1727fd421 100644
--- a/app/javascript/dashboard/store/modules/inboxes.js
+++ b/app/javascript/dashboard/store/modules/inboxes.js
@@ -3,6 +3,7 @@ import * as types from '../mutation-types';
 import InboxesAPI from '../../api/inboxes';
 import WebChannel from '../../api/channel/webChannel';
 import FBChannel from '../../api/channel/fbChannel';
+import TwilioChannel from '../../api/channel/twilioChannel';
 
 export const state = {
   records: [],
@@ -54,6 +55,18 @@ export const actions = {
       throw new Error(error);
     }
   },
+  createTwilioChannel: async ({ commit }, params) => {
+    try {
+      commit(types.default.SET_INBOXES_UI_FLAG, { isCreating: true });
+      const response = await TwilioChannel.create(params);
+      commit(types.default.ADD_INBOXES, response.data);
+      commit(types.default.SET_INBOXES_UI_FLAG, { isCreating: false });
+      return response.data;
+    } catch (error) {
+      commit(types.default.SET_INBOXES_UI_FLAG, { isCreating: false });
+      throw new Error(error);
+    }
+  },
   createFBChannel: async ({ commit }, params) => {
     try {
       commit(types.default.SET_INBOXES_UI_FLAG, { isCreating: true });
diff --git a/app/javascript/shared/mixins/alertMixin.js b/app/javascript/shared/mixins/alertMixin.js
new file mode 100644
index 000000000..61aa7e04e
--- /dev/null
+++ b/app/javascript/shared/mixins/alertMixin.js
@@ -0,0 +1,8 @@
+/* global bus */
+export default {
+  methods: {
+    showAlert(message) {
+      bus.$emit('newToastMessage', message);
+    },
+  },
+};
diff --git a/app/javascript/shared/mixins/configMixin.js b/app/javascript/shared/mixins/configMixin.js
new file mode 100644
index 000000000..89c7569d8
--- /dev/null
+++ b/app/javascript/shared/mixins/configMixin.js
@@ -0,0 +1,7 @@
+export default {
+  computed: {
+    hostURL() {
+      return window.chatwootConfig.hostURL;
+    },
+  },
+};
diff --git a/app/models/account.rb b/app/models/account.rb
index e67ee592e..ced6971ec 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -23,9 +23,10 @@ class Account < ApplicationRecord
   has_many :messages, dependent: :destroy
   has_many :contacts, dependent: :destroy
   has_many :facebook_pages, dependent: :destroy, class_name: '::Channel::FacebookPage'
+  has_many :telegram_bots, dependent: :destroy
+  has_many :twilio_sms, dependent: :destroy, class_name: '::Channel::TwilioSms'
   has_many :twitter_profiles, dependent: :destroy, class_name: '::Channel::TwitterProfile'
   has_many :web_widgets, dependent: :destroy, class_name: '::Channel::WebWidget'
-  has_many :telegram_bots, dependent: :destroy
   has_many :canned_responses, dependent: :destroy
   has_many :webhooks, dependent: :destroy
   has_one :subscription, dependent: :destroy
diff --git a/app/models/channel/twilio_sms.rb b/app/models/channel/twilio_sms.rb
new file mode 100644
index 000000000..305ba576c
--- /dev/null
+++ b/app/models/channel/twilio_sms.rb
@@ -0,0 +1,33 @@
+# == Schema Information
+#
+# Table name: channel_twilio_sms
+#
+#  id           :bigint           not null, primary key
+#  account_sid  :string           not null
+#  auth_token   :string           not null
+#  phone_number :string           not null
+#  created_at   :datetime         not null
+#  updated_at   :datetime         not null
+#  account_id   :integer          not null
+#
+# Indexes
+#
+#  index_channel_twilio_sms_on_account_id_and_phone_number  (account_id,phone_number) UNIQUE
+#
+
+class Channel::TwilioSms < ApplicationRecord
+  self.table_name = 'channel_twilio_sms'
+
+  validates :account_id, presence: true
+  validates :account_sid, presence: true
+  validates :auth_token, presence: true
+  validates :phone_number, uniqueness: { scope: :account_id }, presence: true
+
+  belongs_to :account
+
+  has_one :inbox, as: :channel, dependent: :destroy
+
+  def name
+    'Twilio SMS'
+  end
+end
diff --git a/app/models/channel/twitter_profile.rb b/app/models/channel/twitter_profile.rb
index a8427c55e..ec71f6436 100644
--- a/app/models/channel/twitter_profile.rb
+++ b/app/models/channel/twitter_profile.rb
@@ -11,6 +11,10 @@
 #  account_id                  :integer          not null
 #  profile_id                  :string           not null
 #
+# Indexes
+#
+#  index_channel_twitter_profiles_on_account_id_and_profile_id  (account_id,profile_id) UNIQUE
+#
 
 class Channel::TwitterProfile < ApplicationRecord
   self.table_name = 'channel_twitter_profiles'
diff --git a/app/models/message.rb b/app/models/message.rb
index 355b3216c..1e434ffa2 100644
--- a/app/models/message.rb
+++ b/app/models/message.rb
@@ -113,6 +113,8 @@ class Message < ApplicationRecord
       ::Facebook::SendReplyService.new(message: self).perform
     elsif channel_name == 'Channel::TwitterProfile'
       ::Twitter::SendReplyService.new(message: self).perform
+    elsif channel_name == 'Channel::TwilioSms'
+      ::Twilio::OutgoingMessageService.new(message: self).perform
     end
   end
 
diff --git a/app/models/webhook.rb b/app/models/webhook.rb
index 54baa022a..2895978f9 100644
--- a/app/models/webhook.rb
+++ b/app/models/webhook.rb
@@ -10,6 +10,10 @@
 #  account_id   :integer
 #  inbox_id     :integer
 #
+# Indexes
+#
+#  index_webhooks_on_account_id_and_url  (account_id,url) UNIQUE
+#
 
 class Webhook < ApplicationRecord
   belongs_to :account
diff --git a/app/services/twilio/incoming_message_service.rb b/app/services/twilio/incoming_message_service.rb
new file mode 100644
index 000000000..5d3ee0d26
--- /dev/null
+++ b/app/services/twilio/incoming_message_service.rb
@@ -0,0 +1,77 @@
+class Twilio::IncomingMessageService
+  pattr_initialize [:params!]
+
+  def perform
+    set_contact
+    set_conversation
+    @conversation.messages.create(
+      content: params[:Body],
+      account_id: @inbox.account_id,
+      inbox_id: @inbox.id,
+      message_type: :incoming,
+      contact_id: @contact.id,
+      source_id: params[:SmsSid]
+    )
+  end
+
+  private
+
+  def twilio_inbox
+    @twilio_inbox ||= ::Channel::TwilioSms.find_by!(
+      account_sid: params[:AccountSid],
+      phone_number: params[:To]
+    )
+  end
+
+  def inbox
+    @inbox ||= twilio_inbox.inbox
+  end
+
+  def account
+    @account ||= inbox.account
+  end
+
+  def set_contact
+    contact_inbox = ::ContactBuilder.new(
+      source_id: params[:From],
+      inbox: inbox,
+      contact_attributes: contact_attributes
+    ).perform
+
+    @contact_inbox = contact_inbox
+    @contact = contact_inbox.contact
+  end
+
+  def conversation_params
+    {
+      account_id: @inbox.account_id,
+      inbox_id: @inbox.id,
+      contact_id: @contact.id,
+      contact_inbox_id: @contact_inbox.id,
+      additional_attributes: additional_attributes
+    }
+  end
+
+  def set_conversation
+    @conversation = @contact_inbox.conversations.first
+    return if @conversation
+
+    @conversation = ::Conversation.create!(conversation_params)
+  end
+
+  def contact_attributes
+    {
+      name: params[:From],
+      phone_number: params[:From],
+      contact_attributes: additional_attributes
+    }
+  end
+
+  def additional_attributes
+    {
+      from_zip_code: params[:FromZip],
+      from_country: params[:FromCountry],
+      from_state: params[:FromState]
+    }
+  end
+end
diff --git a/app/services/twilio/outgoing_message_service.rb b/app/services/twilio/outgoing_message_service.rb
new file mode 100644
index 000000000..946fef1fa
--- /dev/null
+++ b/app/services/twilio/outgoing_message_service.rb
@@ -0,0 +1,34 @@
+class Twilio::OutgoingMessageService
+  pattr_initialize [:message!]
+
+  def perform
+    return if message.private
+    return if message.source_id
+    return if inbox.channel.class.to_s != 'Channel::TwilioSms'
+    return unless message.outgoing?
+
+    twilio_message = client.messages.create(
+      body: message.content,
+      from: channel.phone_number,
+      to: contact.phone_number
+    )
+    message.update!(source_id: twilio_message.sid)
+  end
+
+  private
+
+  delegate :conversation, to: :message
+  delegate :contact, to: :conversation
+
+  def inbox
+    @inbox ||= message.inbox
+  end
+
+  def channel
+    @channel ||= inbox.channel
+  end
+
+  def client
+    ::Twilio::REST::Client.new(channel.account_sid, channel.auth_token)
+  end
+end
diff --git a/app/services/twilio/webhook_setup_service.rb b/app/services/twilio/webhook_setup_service.rb
new file mode 100644
index 000000000..21ac1750b
--- /dev/null
+++ b/app/services/twilio/webhook_setup_service.rb
@@ -0,0 +1,35 @@
+class Twilio::WebhookSetupService
+  include Rails.application.routes.url_helpers
+
+  pattr_initialize [:inbox!]
+
+  def perform
+    if phone_numbers.empty?
+      Rails.logger.info "TWILIO_PHONE_NUMBER_NOT_FOUND: #{channel.phone_number}"
+    else
+      twilio_client
+        .incoming_phone_numbers(phonenumber_sid)
+        .update(sms_method: 'POST', sms_url: twilio_callback_index_url)
+    end
+  rescue Twilio::REST::TwilioError => e
+    Rails.logger.info "TWILIO_FAILURE: #{e.message}"
+  end
+
+  private
+
+  def phonenumber_sid
+    phone_numbers.first.sid
+  end
+
+  def phone_numbers
+    @phone_numbers ||= twilio_client.incoming_phone_numbers.list(phone_number: channel.phone_number)
+  end
+
+  def channel
+    @channel ||= inbox.channel
+  end
+
+  def twilio_client
+    @twilio_client ||= ::Twilio::REST::Client.new(channel.account_sid, channel.auth_token)
+  end
+end
diff --git a/app/views/api/v1/accounts/channels/twilio_channels/create.json.jbuilder b/app/views/api/v1/accounts/channels/twilio_channels/create.json.jbuilder
new file mode 100644
index 000000000..8b27a80a7
--- /dev/null
+++ b/app/views/api/v1/accounts/channels/twilio_channels/create.json.jbuilder
@@ -0,0 +1,6 @@
+json.id @inbox.id
+json.channel_id @inbox.channel_id
+json.name @inbox.name
+json.channel_type @inbox.channel_type
+json.enable_auto_assignment @inbox.enable_auto_assignment
+json.phone_number @inbox.channel.phone_number
diff --git a/app/views/api/v1/accounts/inboxes/index.json.jbuilder b/app/views/api/v1/accounts/inboxes/index.json.jbuilder
index 6dab70ff7..c6123cc89 100644
--- a/app/views/api/v1/accounts/inboxes/index.json.jbuilder
+++ b/app/views/api/v1/accounts/inboxes/index.json.jbuilder
@@ -10,5 +10,6 @@ json.payload do
     json.website_token inbox.channel.try(:website_token)
     json.enable_auto_assignment inbox.enable_auto_assignment
     json.web_widget_script inbox.channel.try(:web_widget_script)
+    json.phone_number inbox.channel.try(:phone_number)
   end
 end
diff --git a/app/views/layouts/vueapp.html.erb b/app/views/layouts/vueapp.html.erb
index c7973bdf9..e1855f77c 100644
--- a/app/views/layouts/vueapp.html.erb
+++ b/app/views/layouts/vueapp.html.erb
@@ -31,6 +31,7 @@
     <%= yield %>
     <script>
       window.chatwootConfig = {
+        hostURL: '<%= ENV.fetch('FRONTEND_URL', '') %>',
         fbAppId: '<%= ENV.fetch('FB_APP_ID', nil) %>',
         billingEnabled: <%= ActiveModel::Type::Boolean.new.cast(ENV.fetch('BILLING_ENABLED', false)) %>,
         signupEnabled: '<%= ENV.fetch('ENABLE_ACCOUNT_SIGNUP', true) %>'
diff --git a/config/routes.rb b/config/routes.rb
index 4f9e13594..42e83ea41 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -36,7 +36,9 @@ Rails.application.routes.draw do
           end
         end
         resources :canned_responses, except: [:show, :edit, :new]
-
+        namespace :channels do
+          resource :twilio_channel, only: [:create]
+        end
         resources :conversations, only: [:index, :show] do
           scope module: :conversations do
             resources :messages, only: [:index, :create]
@@ -135,6 +137,10 @@ Rails.application.routes.draw do
     resource :callback, only: [:show]
   end
 
+  namespace :twilio do
+    resources :callback, only: [:create]
+  end
+
   # ----------------------------------------------------------------------
   # Used in mailer templates
   resource :app, only: [:index] do
diff --git a/db/migrate/20200330071706_create_channel_twilio_sms.rb b/db/migrate/20200330071706_create_channel_twilio_sms.rb
new file mode 100644
index 000000000..545c845e6
--- /dev/null
+++ b/db/migrate/20200330071706_create_channel_twilio_sms.rb
@@ -0,0 +1,11 @@
+class CreateChannelTwilioSms < ActiveRecord::Migration[6.0]
+  def change
+    create_table :channel_twilio_sms do |t|
+      t.string :phone_number, null: false
+      t.string :auth_token, null: false
+      t.string :account_sid, null: false
+      t.integer :account_id, null: false
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20200404135009_add_unique_validation_index.rb b/db/migrate/20200404135009_add_unique_validation_index.rb
new file mode 100644
index 000000000..7dcab8c46
--- /dev/null
+++ b/db/migrate/20200404135009_add_unique_validation_index.rb
@@ -0,0 +1,7 @@
+class AddUniqueValidationIndex < ActiveRecord::Migration[6.0]
+  def change
+    add_index :channel_twitter_profiles, [:account_id, :profile_id], unique: true
+    add_index :channel_twilio_sms, [:account_id, :phone_number], unique: true
+    add_index :webhooks, [:account_id, :url], unique: true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 48a48112a..4ce01e6ff 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_03_31_095710) do
+ActiveRecord::Schema.define(version: 2020_04_04_135009) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -115,6 +115,16 @@ ActiveRecord::Schema.define(version: 2020_03_31_095710) do
     t.index ["page_id"], name: "index_channel_facebook_pages_on_page_id"
   end
 
+  create_table "channel_twilio_sms", force: :cascade do |t|
+    t.string "phone_number", null: false
+    t.string "auth_token", null: false
+    t.string "account_sid", null: false
+    t.integer "account_id", null: false
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.index ["account_id", "phone_number"], name: "index_channel_twilio_sms_on_account_id_and_phone_number", unique: true
+  end
+
   create_table "channel_twitter_profiles", force: :cascade do |t|
     t.string "name"
     t.string "profile_id", null: false
@@ -123,6 +133,7 @@ ActiveRecord::Schema.define(version: 2020_03_31_095710) do
     t.integer "account_id", null: false
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
+    t.index ["account_id", "profile_id"], name: "index_channel_twitter_profiles_on_account_id_and_profile_id", unique: true
   end
 
   create_table "channel_web_widgets", id: :serial, force: :cascade do |t|
@@ -331,6 +342,7 @@ ActiveRecord::Schema.define(version: 2020_03_31_095710) do
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
     t.integer "webhook_type", default: 0
+    t.index ["account_id", "url"], name: "index_webhooks_on_account_id_and_url", unique: true
   end
 
   add_foreign_key "account_users", "accounts"
diff --git a/spec/builders/contact_builder_spec.rb b/spec/builders/contact_builder_spec.rb
new file mode 100644
index 000000000..4fb935430
--- /dev/null
+++ b/spec/builders/contact_builder_spec.rb
@@ -0,0 +1,40 @@
+require 'rails_helper'
+
+describe ::ContactBuilder do
+  let(:account) { create(:account) }
+  let(:inbox) { create(:inbox, account: account) }
+  let(:contact) { create(:contact, account: account) }
+  let(:existing_contact_inbox) { create(:contact_inbox, contact: contact, inbox: inbox) }
+
+  describe '#perform' do
+    it 'doesnot create contact if it already exist' do
+      contact_inbox = described_class.new(
+        source_id: existing_contact_inbox.source_id,
+        inbox: inbox,
+        contact_attributes: {
+          name: 'Contact',
+          phone_number: '+1234567890',
+          email: 'testemail@example.com'
+        }
+      ).perform
+
+      expect(contact_inbox.contact.id).to be(contact.id)
+    end
+
+    it 'creates contact if contact doesnot exist' do
+      contact_inbox = described_class.new(
+        source_id: '123456',
+        inbox: inbox,
+        contact_attributes: {
+          name: 'Contact',
+          phone_number: '+1234567890',
+          email: 'testemail@example.com'
+        }
+      ).perform
+
+      expect(contact_inbox.contact.id).not_to eq(contact.id)
+      expect(contact_inbox.contact.name).to eq('Contact')
+      expect(contact_inbox.inbox_id).to eq(inbox.id)
+    end
+  end
+end
diff --git a/spec/controllers/api/v1/accounts/channels/twilio_channels_controller_spec.rb b/spec/controllers/api/v1/accounts/channels/twilio_channels_controller_spec.rb
new file mode 100644
index 000000000..94afba3b5
--- /dev/null
+++ b/spec/controllers/api/v1/accounts/channels/twilio_channels_controller_spec.rb
@@ -0,0 +1,76 @@
+require 'rails_helper'
+
+RSpec.describe '/api/v1/accounts/{account.id}/channels/twilio_channel', type: :request do
+  let(:account) { create(:account) }
+  let(:admin) { create(:user, account: account, role: :administrator) }
+  let(:agent) { create(:user, account: account, role: :agent) }
+  let(:twilio_client) { instance_double(::Twilio::REST::Client) }
+  let(:message_double) { instance_double('message') }
+  let(:twilio_webhook_setup_service) { instance_double(::Twilio::WebhookSetupService) }
+
+  before do
+    allow(::Twilio::REST::Client).to receive(:new).and_return(twilio_client)
+    allow(::Twilio::WebhookSetupService).to receive(:new).and_return(twilio_webhook_setup_service)
+    allow(twilio_webhook_setup_service).to receive(:perform)
+  end
+
+  describe 'POST /api/v1/accounts/{account.id}/channels/twilio_channel' do
+    let(:params) do
+      {
+        twilio_channel: {
+          account_sid: 'sid',
+          auth_token: 'token',
+          phone_number: '+1234567890',
+          name: 'SMS Channel'
+        }
+      }
+    end
+
+    context 'when unauthenticated user' do
+      it 'returns unauthorized' do
+        post api_v1_account_channels_twilio_channel_path(account), params: params
+        expect(response).to have_http_status(:unauthorized)
+      end
+    end
+
+    context 'when user is logged in' do
+      context 'with user as administrator' do
+        it 'creates inbox and returns inbox object' do
+          allow(twilio_client).to receive(:messages).and_return(message_double)
+          allow(message_double).to receive(:list).and_return([])
+
+          post api_v1_account_channels_twilio_channel_path(account),
+               params: params,
+               headers: admin.create_new_auth_token
+
+          expect(response).to have_http_status(:success)
+          json_response = JSON.parse(response.body)
+
+          expect(json_response['name']).to eq('SMS Channel')
+          expect(json_response['phone_number']).to eq('+1234567890')
+        end
+
+        it 'return error if Twilio tokens are incorrect' do
+          allow(twilio_client).to receive(:messages).and_return(message_double)
+          allow(message_double).to receive(:list).and_raise(Twilio::REST::TwilioError)
+
+          post api_v1_account_channels_twilio_channel_path(account),
+               params: params,
+               headers: admin.create_new_auth_token
+
+          expect(response).to have_http_status(:unprocessable_entity)
+        end
+      end
+
+      context 'with user as agent' do
+        it 'returns unauthorized' do
+          post api_v1_account_channels_twilio_channel_path(account),
+               params: params,
+               headers: agent.create_new_auth_token
+
+          expect(response).to have_http_status(:unauthorized)
+        end
+      end
+    end
+  end
+end
diff --git a/spec/controllers/twilio/callbacks_controller_spec.rb b/spec/controllers/twilio/callbacks_controller_spec.rb
new file mode 100644
index 000000000..847e9b12a
--- /dev/null
+++ b/spec/controllers/twilio/callbacks_controller_spec.rb
@@ -0,0 +1,18 @@
+require 'rails_helper'
+
+RSpec.describe 'Twilio::CallbacksController', type: :request do
+  include Rails.application.routes.url_helpers
+  let(:twilio_service) { instance_double(Twilio::IncomingMessageService) }
+
+  before do
+    allow(::Twilio::IncomingMessageService).to receive(:new).and_return(twilio_service)
+    allow(twilio_service).to receive(:perform)
+  end
+
+  describe 'GET /twilio/callback' do
+    it 'calls incoming message service' do
+      post twilio_callback_index_url, params: {}
+      expect(twilio_service).to have_received(:perform)
+    end
+  end
+end
diff --git a/spec/controllers/twitter/callbacks_controller_spec.rb b/spec/controllers/twitter/callbacks_controller_spec.rb
index 430068b83..9b8c9ce46 100644
--- a/spec/controllers/twitter/callbacks_controller_spec.rb
+++ b/spec/controllers/twitter/callbacks_controller_spec.rb
@@ -21,7 +21,7 @@ RSpec.describe 'Twitter::CallbacksController', type: :request do
   end
 
   describe 'GET /twitter/callback' do
-    it 'renders the page correctly when called with website_token' do
+    it 'returns correct response' do
       get twitter_callback_url
       account.reload
       expect(response).to redirect_to app_twitter_inbox_agents_url(account_id: account.id, inbox_id: account.inboxes.last.id)
diff --git a/spec/factories/channel/twilio_sms.rb b/spec/factories/channel/twilio_sms.rb
new file mode 100644
index 000000000..8fe6c9895
--- /dev/null
+++ b/spec/factories/channel/twilio_sms.rb
@@ -0,0 +1,9 @@
+FactoryBot.define do
+  factory :channel_twilio_sms, class: 'Channel::TwilioSms' do
+    auth_token { SecureRandom.uuid }
+    account_sid { SecureRandom.uuid }
+    sequence(:phone_number) { |n| "+123456789#{n}1" }
+    inbox
+    account
+  end
+end
diff --git a/spec/services/twilio/incoming_message_service_spec.rb b/spec/services/twilio/incoming_message_service_spec.rb
new file mode 100644
index 000000000..7b895bd35
--- /dev/null
+++ b/spec/services/twilio/incoming_message_service_spec.rb
@@ -0,0 +1,39 @@
+require 'rails_helper'
+
+describe Twilio::IncomingMessageService do
+  let!(:account) { create(:account) }
+  let!(:twilio_sms) do
+    create(:channel_twilio_sms, account: account, phone_number: '+1234567890', account_sid: 'ACxxx')
+  end
+  let!(:contact) { create(:contact, account: account, phone_number: '+12345') }
+  let(:contact_inbox) { create(:contact_inbox, source_id: '+12345', contact: contact, inbox: twilio_sms.inbox) }
+  let!(:conversation) { create(:conversation, contact: contact, inbox: twilio_sms.inbox, contact_inbox: contact_inbox) }
+
+  describe '#perform' do
+    it 'creates a new message in existing conversation' do
+      params = {
+        SmsSid: 'SMxx',
+        From: '+12345',
+        AccountSid: 'ACxxx',
+        To: '+1234567890',
+        Body: 'testing3'
+      }
+
+      described_class.new(params: params).perform
+      expect(conversation.reload.messages.last.content).to eq('testing3')
+    end
+
+    it 'creates a new conversation' do
+      params = {
+        SmsSid: 'SMxx',
+        From: '+123456',
+        AccountSid: 'ACxxx',
+        To: '+1234567890',
+        Body: 'new conversation'
+      }
+
+      described_class.new(params: params).perform
+      expect(Conversation.count).to eq(2)
+    end
+  end
+end
diff --git a/spec/services/twilio/outgoing_message_service_spec.rb b/spec/services/twilio/outgoing_message_service_spec.rb
new file mode 100644
index 000000000..e9be62671
--- /dev/null
+++ b/spec/services/twilio/outgoing_message_service_spec.rb
@@ -0,0 +1,59 @@
+require 'rails_helper'
+
+describe Twilio::OutgoingMessageService do
+  subject(:outgoing_message_service) { described_class.new(message: message) }
+
+  let(:twilio_client) { instance_double(::Twilio::REST::Client) }
+  let(:messages_double) { instance_double('messages') }
+  let(:message_record_double) { instance_double('message_record_double') }
+
+  let!(:account) { create(:account) }
+  let!(:widget_inbox) { create(:inbox, account: account) }
+  let!(:twilio_sms) { create(:channel_twilio_sms, account: account) }
+  let!(:twilio_inbox) { create(:inbox, channel: twilio_sms, account: account) }
+  let!(:contact) { create(:contact, account: account) }
+  let(:contact_inbox) { create(:contact_inbox, contact: contact, inbox: twilio_inbox) }
+  let(:conversation) { create(:conversation, contact: contact, inbox: twilio_inbox, contact_inbox: contact_inbox) }
+
+  before do
+    allow(::Twilio::REST::Client).to receive(:new).and_return(twilio_client)
+    allow(twilio_client).to receive(:messages).and_return(messages_double)
+  end
+
+  describe '#perform' do
+    context 'without reply' do
+      it 'if message is private' do
+        create(:message, message_type: 'outgoing', private: true, inbox: twilio_inbox, account: account)
+        expect(twilio_client).not_to have_received(:messages)
+      end
+
+      it 'if inbox channel is not facebook page' do
+        create(:message, message_type: 'outgoing', inbox: widget_inbox, account: account)
+        expect(twilio_client).not_to have_received(:messages)
+      end
+
+      it 'if message is not outgoing' do
+        create(:message, message_type: 'incoming', inbox: twilio_inbox, account: account)
+        expect(twilio_client).not_to have_received(:messages)
+      end
+
+      it 'if message has an source id' do
+        create(:message, message_type: 'outgoing', inbox: twilio_inbox, account: account, source_id: SecureRandom.uuid)
+        expect(twilio_client).not_to have_received(:messages)
+      end
+    end
+
+    context 'with reply' do
+      it 'if message is sent from chatwoot and is outgoing' do
+        allow(messages_double).to receive(:create).and_return(message_record_double)
+        allow(message_record_double).to receive(:sid).and_return('1234')
+
+        outgoing_message = create(
+          :message, message_type: 'outgoing', inbox: twilio_inbox, account: account, conversation: conversation
+        )
+
+        expect(outgoing_message.reload.source_id).to eq('1234')
+      end
+    end
+  end
+end
diff --git a/spec/services/twilio/webhook_setup_service_spec.rb b/spec/services/twilio/webhook_setup_service_spec.rb
new file mode 100644
index 000000000..24c37d4f9
--- /dev/null
+++ b/spec/services/twilio/webhook_setup_service_spec.rb
@@ -0,0 +1,48 @@
+require 'rails_helper'
+
+describe Twilio::WebhookSetupService do
+  include Rails.application.routes.url_helpers
+
+  let(:channel_twilio_sms) { create(:channel_twilio_sms) }
+  let(:twilio_client) { instance_double(::Twilio::REST::Client) }
+  let(:phone_double) { instance_double('phone_double') }
+  let(:phone_record_double) { instance_double('phone_record_double') }
+
+  before do
+    allow(::Twilio::REST::Client).to receive(:new).and_return(twilio_client)
+    allow(phone_double).to receive(:update)
+    allow(phone_record_double).to receive(:sid).and_return('1234')
+  end
+
+  describe '#perform' do
+    it 'logs error if phone_number is not found' do
+      allow(twilio_client).to receive(:incoming_phone_numbers).and_return(phone_double)
+      allow(phone_double).to receive(:list).and_return([])
+
+      described_class.new(inbox: channel_twilio_sms.inbox).perform
+
+      expect(phone_double).not_to have_received(:update)
+    end
+
+    it 'update webhook_url if phone_number is found' do
+      allow(twilio_client).to receive(:incoming_phone_numbers).and_return(phone_double)
+      allow(phone_double).to receive(:list).and_return([phone_record_double])
+
+      described_class.new(inbox: channel_twilio_sms.inbox).perform
+
+      expect(phone_double).to have_received(:update).with(
+        sms_method: 'POST',
+        sms_url: twilio_callback_index_url
+      )
+    end
+
+    it 'doesnot call update if TwilioError is thrown' do
+      allow(twilio_client).to receive(:incoming_phone_numbers).and_return(phone_double)
+      allow(phone_double).to receive(:list).and_raise(Twilio::REST::TwilioError)
+
+      described_class.new(inbox: channel_twilio_sms.inbox).perform
+
+      expect(phone_double).not_to have_received(:update)
+    end
+  end
+end