Fix: Find mailbox with cc email (#4372)

app/mailboxes/application_mailbox.rb

@@ -21,17 +21,20 @@ class ApplicationMailbox < ActionMailbox::Base
   def self.support_mail?
     proc do |inbound_mail_obj|
       is_a_support_email = false
-      inbound_mail_obj.mail.to&.each do |email|
-        channel = Channel::Email.find_by('lower(email) = ? OR lower(forward_to_email) = ?', email.downcase, email.downcase)
-        if channel.present?
-          is_a_support_email = true
-          break
-        end
-      end
+
+      is_a_support_email = true if reply_to_mail?(inbound_mail_obj, is_a_support_email)
+
       is_a_support_email
     end
   end
 
+  def self.reply_to_mail?(inbound_mail_obj, is_a_support_email)
+    return if is_a_support_email
+
+    channel = EmailChannelFinder.new(inbound_mail_obj.mail).perform
+    channel.present?
+  end
+
   def self.catch_all_mail?
     proc { |_mail| true }
   end