Emails sent from Square have invalid References header

Our software organizes and archives email on behalf of our clients. We have recently noticed that emails from Square were being archived in the wrong place. We use the References header to thread messages.

The References header should contain a chain of Message-IDs from parents of the email. Each Message-ID should be globally unique.

It appears that emails from Square now contain the value of “[email protected]”, which neither unique nor a parent’s Message-ID.

Is there any way to get this fixed so emails follow the RFC 822 standard?


The emails that are automatically sent from Square aren’t currently documented for this use. However since these are the automatically generated emails you’ll want to reach out to our Customer Support team about this since this space is mainly for our Developer Tools. :slightly_smiling_face:

Thanks for the response.
This is not a thing that should be documented, as it is an email.
The problem is that the email is not following basic internet standards.
I reached out to customer support and they said I should post here.
Do you know of anyone specific I can talk to?

There isn’t a single contact that I can provide. Our Customer Success team is definitely the team that would handle this and if they really don’t know the answer then they should be escalating it to there internal sources. :slightly_smiling_face:

I understand. Is there any way to know if it was escalated? Apologies for all of the questions, but I have not attempted to contact Square Support.

Did they provide a case number? :slightly_smiling_face:

They did not. I got bounced around reps, they told me they would escalate it, then told me to post here.

I was able to track it down and left a note. :slightly_smiling_face:

Thank you for going the extra mile. I am going to cross my fingers :slight_smile: