Gmail Autoreply Zap Results in Email Subject = Delivery Status Notification (Failure)

  • 1 September 2023
  • 4 replies

I created a Squarespace ↔ Gmail zap , with an autoreply.



  1. Squarespace Form with subject Blah lands in Gmail
  2. Created an auto-reply when form Blah arrives in Gmail, send auto-reply message to recipient email address
  3. Login to recipient email to check auto-reply message. Noticed that Subject = Delivery Status Notification (Failure).

Any ideas why the auto-reply subject says ‘Delivery Status Notification (Failure)’ ?


4 replies

Userlevel 7
Badge +14

Hi @ayb 

Good question.

Please post detailed screenshots with how your Zap steps are configured to help give us context.

Userlevel 7
Badge +14


Also, check your Zap Runs history details to see the DATA IN/OUT for each Zap step to help you troubleshoot:

Thanks Troy. I checked DATA IN/DATA OUT and did see a SUBJECT field included.

I’ve attached the screenshot (as PDF) for your reference.

Userlevel 7
Badge +14


We would need to see screenshots of the DATA IN/OUT from the Zap Runs:


NOTE: The Zap action step for Gmail is configured to always use this same Thread, so you should change it to use the Thread ID mapped from Step 1.