diff --git a/app/javascript/dashboard/components/widgets/WootWriter/Editor.vue b/app/javascript/dashboard/components/widgets/WootWriter/Editor.vue
index a323d4095..956e04dda 100644
--- a/app/javascript/dashboard/components/widgets/WootWriter/Editor.vue
+++ b/app/javascript/dashboard/components/widgets/WootWriter/Editor.vue
@@ -830,7 +830,13 @@ useEmitter(BUS_EVENTS.INSERT_INTO_RICH_EDITOR, insertContentIntoEditor);
 </script>
 
 <template>
-  <div ref="editorRoot" class="relative w-full">
+  <div
+    ref="editorRoot"
+    class="relative w-full"
+    :class="{
+      'opacity-50 cursor-not-allowed pointer-events-none': disabled,
+    }"
+  >
     <TagAgents
       v-if="showUserMentions && isPrivate"
       :search-key="mentionSearchKey"
diff --git a/app/javascript/dashboard/components/widgets/WootWriter/ReplyBottomPanel.vue b/app/javascript/dashboard/components/widgets/WootWriter/ReplyBottomPanel.vue
index 5842b7f66..241e65505 100644
--- a/app/javascript/dashboard/components/widgets/WootWriter/ReplyBottomPanel.vue
+++ b/app/javascript/dashboard/components/widgets/WootWriter/ReplyBottomPanel.vue
@@ -122,6 +122,10 @@ export default {
       type: Boolean,
       default: false,
     },
+    isEditorDisabled: {
+      type: Boolean,
+      default: false,
+    },
   },
   emits: [
     'replaceText',
@@ -130,7 +134,7 @@ export default {
     'selectContentTemplate',
     'toggleQuotedReply',
   ],
-  setup() {
+  setup(props) {
     const { setSignatureFlagForInbox, fetchSignatureFlagFromUISettings } =
       useUISettings();
 
@@ -139,6 +143,9 @@ export default {
     const keyboardEvents = {
       '$mod+Alt+KeyA': {
         action: () => {
+          // Skip if editor is disabled (e.g., WhatsApp 24-hour window expired)
+          if (props.isEditorDisabled) return;
+
           // TODO: This is really hacky, we need to replace the file picker component with
           // a custom one, where the logic and the component markup is isolated.
           // Once we have the custom component, we can remove the hacky logic below.
@@ -146,7 +153,7 @@ export default {
           const uploadTriggerButton = document.querySelector(
             '#conversationAttachment'
           );
-          uploadTriggerButton.click();
+          if (uploadTriggerButton) uploadTriggerButton.click();
         },
         allowOnFocusedInput: true,
       },
@@ -177,9 +184,11 @@ export default {
       };
     },
     showAttachButton() {
+      if (this.isEditorDisabled) return false;
       return this.showFileUpload || this.isNote;
     },
     showAudioRecorderButton() {
+      if (this.isEditorDisabled) return false;
       if (this.isALineChannel) {
         return false;
       }
@@ -197,6 +206,7 @@ export default {
       );
     },
     showAudioPlayStopButton() {
+      if (this.isEditorDisabled) return false;
       return this.showAudioRecorder && this.isRecordingAudio;
     },
     isInstagramDM() {
@@ -236,6 +246,7 @@ export default {
       }
     },
     showMessageSignatureButton() {
+      if (this.isEditorDisabled) return false;
       return !this.isOnPrivateNote;
     },
     sendWithSignature() {
@@ -280,6 +291,7 @@ export default {
   <div class="flex justify-between p-3" :class="wrapClass">
     <div class="left-wrap">
       <NextButton
+        v-if="!isEditorDisabled"
         v-tooltip.top-end="$t('CONVERSATION.REPLYBOX.TIP_EMOJI_ICON')"
         icon="i-ph-smiley-sticker"
         slate
@@ -288,6 +300,7 @@ export default {
         @click="toggleEmojiPicker"
       />
       <FileUpload
+        v-if="showAttachButton"
         ref="uploadRef"
         v-tooltip.top-end="$t('CONVERSATION.REPLYBOX.TIP_ATTACH_ICON')"
         input-id="conversationAttachment"
diff --git a/app/javascript/dashboard/components/widgets/WootWriter/ReplyTopPanel.vue b/app/javascript/dashboard/components/widgets/WootWriter/ReplyTopPanel.vue
index 09939f5d2..ae49145dc 100644
--- a/app/javascript/dashboard/components/widgets/WootWriter/ReplyTopPanel.vue
+++ b/app/javascript/dashboard/components/widgets/WootWriter/ReplyTopPanel.vue
@@ -33,6 +33,10 @@ export default {
       type: Boolean,
       default: false,
     },
+    isEditorDisabled: {
+      type: Boolean,
+      default: false,
+    },
     conversationId: {
       type: Number,
       default: null,
@@ -157,7 +161,7 @@ export default {
       <div class="relative">
         <NextButton
           ghost
-          :disabled="disabled"
+          :disabled="disabled || isEditorDisabled"
           :class="{
             'text-n-violet-9 hover:enabled:!bg-n-violet-3': !showCopilotMenu,
             'text-n-violet-9 bg-n-violet-3': showCopilotMenu,
diff --git a/app/javascript/dashboard/components/widgets/conversation/ReplyBox.vue b/app/javascript/dashboard/components/widgets/conversation/ReplyBox.vue
index ee63aa711..78a2481e9 100644
--- a/app/javascript/dashboard/components/widgets/conversation/ReplyBox.vue
+++ b/app/javascript/dashboard/components/widgets/conversation/ReplyBox.vue
@@ -199,6 +199,11 @@ export default {
       return this.$store.getters['inboxes/getInbox'](this.inboxId);
     },
     messagePlaceHolder() {
+      if (this.isEditorDisabled) {
+        return this.isAWhatsAppChannel
+          ? this.$t('CONVERSATION.FOOTER.MESSAGING_RESTRICTED_WHATSAPP')
+          : this.$t('CONVERSATION.FOOTER.MESSAGING_RESTRICTED');
+      }
       return this.isPrivate
         ? this.$t('CONVERSATION.FOOTER.PRIVATE_MSG_INPUT')
         : this.$t('CONVERSATION.FOOTER.MSG_INPUT');
@@ -210,6 +215,7 @@ export default {
       return this.maxLength - this.message.length;
     },
     isReplyButtonDisabled() {
+      if (this.isEditorDisabled) return true;
       if (this.isATwitterInbox) return true;
       if (this.hasAttachments || this.hasRecordedAudio) return false;
 
@@ -418,6 +424,13 @@ export default {
     isDefaultEditorMode() {
       return !this.showAudioRecorderEditor && !this.copilot.isActive.value;
     },
+    isEditorDisabled() {
+      return (
+        this.isAWhatsAppChannel &&
+        !this.isOnPrivateNote &&
+        !this.currentChat.can_reply
+      );
+    },
   },
   watch: {
     currentChat(conversation, oldConversation) {
@@ -677,6 +690,9 @@ export default {
       // Don't handle paste if compose new conversation modal is open
       if (this.newConversationModalActive) return;
 
+      // Don't handle paste if editor is disabled
+      if (this.isEditorDisabled) return;
+
       // Filter valid files (non-zero size)
       Array.from(e.clipboardData.files)
         .filter(file => file.size > 0)
@@ -1216,6 +1232,7 @@ export default {
         (copilot.isActive.value && copilot.isButtonDisabled.value) ||
         showAudioRecorderEditor
       "
+      :is-editor-disabled="isEditorDisabled"
       :is-message-length-reaching-threshold="isMessageLengthReachingThreshold"
       :characters-remaining="charactersRemaining"
       :popout-reply-box="popOutReplyBox"
@@ -1292,6 +1309,7 @@ export default {
           :placeholder="messagePlaceHolder"
           :update-selection-with="updateEditorSelectionWith"
           :min-height="4"
+          :disabled="isEditorDisabled"
           enable-variables
           :variables="messageVariables"
           :signature="messageSignature"
@@ -1367,6 +1385,7 @@ export default {
         :is-recording-audio="isRecordingAudio"
         :is-send-disabled="isReplyButtonDisabled"
         :is-note="isPrivate"
+        :is-editor-disabled="isEditorDisabled"
         :on-file-upload="onFileUpload"
         :on-send="onSendReply"
         :conversation-type="conversationType"
diff --git a/app/javascript/dashboard/i18n/locale/en/conversation.json b/app/javascript/dashboard/i18n/locale/en/conversation.json
index c1c87bc0c..951a46993 100644
--- a/app/javascript/dashboard/i18n/locale/en/conversation.json
+++ b/app/javascript/dashboard/i18n/locale/en/conversation.json
@@ -190,6 +190,8 @@
       "DISABLE_SIGN_TOOLTIP": "Disable signature",
       "MSG_INPUT": "Shift + enter for new line. Start with '/' to select a Canned Response.",
       "PRIVATE_MSG_INPUT": "Shift + enter for new line. This will be visible only to Agents",
+      "MESSAGING_RESTRICTED": "You cannot reply to this conversation",
+      "MESSAGING_RESTRICTED_WHATSAPP": "You can only reply using a template message due to 24-hour message window restriction",
       "MESSAGE_SIGNATURE_NOT_CONFIGURED": "Message signature is not configured, please configure it in profile settings.",
       "COPILOT_MSG_INPUT": "Give copilot additional prompts, or ask anything else... Press enter to send follow-up",
       "CLICK_HERE": "Click here to update",