It’s a bit hard to say without seeing your form – but my initial guess is that you simply haven’t mapped the email address field on your form to the MailChimp email field.

Have you followed these steps? https://documentation.unbounce.com/hc/en-us/articles/203509864

Yes. Plus all the other Variants seem to work just fine.

I would go through all the Troubleshooting points on that link I sent previously, (if you haven’t already).

It’s very difficult to see what is going on without accessing your accounts.

Hi there!

Could you show us the details of your submissions? If it looks like a “fake” e-mail, such as batman@123456.com it might flag it as spam and cause this error.

Let me know 🙂

its not a fake email error, as I have checked it with my own email.