Unable to use emails with *.biz

Hello @adamtucker!

Thanks for keeping us posted about this issue!
I tested this email example on one of our test sites, but it was saved successfully. So the problem is most probably specific to your website.

Could we please check it from your site? Please submit a support ticket using this contact form. We will take a look at the issue and publish it under this topic also.

Make sure to indicate the link to this forum thread in your message.
Cheers!