This is honestly extremely frustrating.
When I define a custom preview text for an email, Mailtrap still lets email clients append the beginning of the email body right after it. The result looks messy and completely defeats the purpose of having a dedicated preview text.
Brevo already handles this properly by automatically preventing the email body from appearing after the preview text.
Mailtrap should do the same: when a preview text is defined, automatically add the necessary hidden padding so that only the preview text is displayed in the inbox preview.
This should be handled by Mailtrap, not something users have to manually hack into every email template.
