diff --git a/lib/notification_factory/mailer.rb b/lib/notification_factory/mailer.rb
index 928ab88d0..e3037a221 100644
--- a/lib/notification_factory/mailer.rb
+++ b/lib/notification_factory/mailer.rb
@@ -299,8 +299,8 @@ returns
       escape:   false
     ).render
 
-    # strip off the extra newline at the end for the subjects of plaintext templates
-    message_subject.chomp! if data[:format] == 'txt'
+    # strip off the extra newline at the end of the subject to avoid =0A suffixes (see #2726)
+    message_subject.chomp!
 
     message_body = NotificationFactory::Renderer.new(
       objects:  data[:objects],