add reply to param

app/controllers/api/submissions_controller.rb

@@ -161,11 +161,11 @@ module Api
 
     def submissions_params
       permitted_attrs = [
-        :send_email, :send_sms, :bcc_completed, :completed_redirect_url,
+        :send_email, :send_sms, :bcc_completed, :completed_redirect_url, :reply_to,
         {
           message: %i[subject body],
           submitters: [[:send_email, :send_sms, :completed_redirect_url, :uuid, :name, :email, :role,
-                        :completed, :phone, :application_key, :external_id,
+                        :completed, :phone, :application_key, :external_id, :reply_to,
                         { metadata: {}, values: {}, readonly_fields: [], message: %i[subject body],
                           fields: [%i[name default_value title description
                                       readonly validation_pattern invalid_message]] }]]

app/mailers/submitter_mailer.rb

@@ -30,7 +30,8 @@ class SubmitterMailer < ApplicationMailer
       to: @submitter.friendly_name,
       from: from_address_for_submitter(submitter),
       subject:,
-      reply_to: (submitter.submission.created_by_user || submitter.template.author)&.friendly_name&.sub(/\+\w+@/, '@')
+      reply_to: submitter.preferences['reply_to'].presence ||
+                (submitter.submission.created_by_user || submitter.template.author)&.friendly_name&.sub(/\+\w+@/, '@')
     )
   end
 
@@ -84,6 +85,9 @@ class SubmitterMailer < ApplicationMailer
 
     mail(from: from_address_for_submitter(submitter),
          to: to || @submitter.friendly_name,
+         reply_to: @submitter.preferences['reply_to'].presence ||
+                   (@submitter.submission.created_by_user ||
+                    @submitter.template.author)&.friendly_name&.sub(/\+\w+@/, '@'),
          subject:)
   end