When content has no text al template is showing in the mail

If your issue is that the received email is not formatted correctly, then at a minimum we will need to see the raw text of the received email message as well as the raw HTML source of the sent message. Please post this raw output in your issue report using the "code" formatting option. To make debugging easier, please simplify your email so that it is the minimum length required to demonstrate the problem - posting excess and irrelevant content makes it harder to resolve your problem.

Also, please turn off theme debugging, and if you have modified the template in any way from the original, then see if you can reproduce the problem with the original template.

It is highly likely that the only thing that is wrong here is the mail headers, which you haven't shown.

The requested information has not been provided.