diff --git a/app/builders/messages/message_builder.rb b/app/builders/messages/message_builder.rb
index 0ec73edc3..e1087b19f 100644
--- a/app/builders/messages/message_builder.rb
+++ b/app/builders/messages/message_builder.rb
@@ -149,7 +149,8 @@ class Messages::MessageBuilder
       content_type: @params[:content_type],
       items: @items,
       in_reply_to: @in_reply_to,
-      echo_id: @params[:echo_id]
+      echo_id: @params[:echo_id],
+      source_id: @params[:source_id]
     }.merge(external_created_at).merge(automation_rule_id).merge(campaign_id).merge(template_params)
   end
 end