Push Notifications - email not working

Push Notifications - email not working

 Hello,

I have placed and "Automation" within the form settings.

The rule added is if status is changed from "pending" to "accepted" then send email to xxx@gmail.com and  xxx@domain.com

The email is being sent to the gmail, but not the domain.

Not sure why a user can sign up with xxx@domain, but not receive notifications.
Any help would be great.

Thanks