Help Needed: Persistent Errors with Email Automation

Hi everyone,
I hope this message finds you well. I am reaching out because we’ve been facing ongoing issues with for our email automation, and it’s starting to affect our business significantly.

Every time we attempt to use the automation, we encounter error notices. This has led to numerous emails being left unresponded to, which in turn has impacted our communication with clients. We rely on ChatGPT to draft responses automatically, but the responses are drafted and not sent.

This situation has been very disheartening, as we depend on for efficient communication. I’m attaching a screenshot of the error message we receive in hopes that someone here might be able to offer some advice or solutions.

We really need this resolved as soon as possible, as it’s becoming a major obstacle for us. Any help or guidance would be greatly appreciated.

Thank you in advance for your support.

What I’m seeing is that there is no destination address.

It may be a misunderstanding of the "Reply-To: header. This header means, “When the recipient replies to this email, send it to the Reply-TO address”. You usually use this feature when you send an email from one address (e.g., but you want replies to go to a different address (e.g.,

If the Reply-To address is empty, you end up with an empty email recipient.

I invite you to share your bundles so we can see what you get. You can hide the email addresses if you want so we don’t see them. But make sure the recipient is never empty and you won’t get that error.


Welcome to the Make community!

The Reply-To variable might be empty.

You can make it “fallback” to another variable, by using the ifempty function.

Here is an example, change the parameters to the variables from module 3:


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