disable decline email

app/controllers/submit_form_decline_controller.rb

@@ -21,7 +21,10 @@ class SubmitFormDeclineController < ApplicationController
 
     user = submitter.submission.created_by_user || submitter.template.author
 
-    SubmitterMailer.declined_email(submitter, user).deliver_later!
+    if user.user_configs.find_by(key: UserConfig::RECEIVE_DECLINED_EMAIL)&.value != false
+      SubmitterMailer.declined_email(submitter, user).deliver_later!
+    end
+
     SendFormDeclinedWebhookRequestJob.perform_async('submitter_id' => submitter.id)
 
     redirect_to submit_form_path(submitter.slug)

app/models/user_config.rb

@@ -24,6 +24,7 @@ class UserConfig < ApplicationRecord
   SIGNATURE_KEY = 'signature'
   INITIALS_KEY = 'initials'
   RECEIVE_COMPLETED_EMAIL = 'receive_completed_email'
+  RECEIVE_DECLINED_EMAIL = 'receive_declined_email'
 
   belongs_to :user