How do I Send HTML Emails via Rules?

Question

The Rules module provides a value field for the "send mail" action. Since I also have the PHP filter module, I have the ability to add PHP code there. I want to add HTML formatting to my email. Is there a more "correct/Drupal way" of sending HTML based emails via rules other than pasting my code there?

The pet module looks like a decent candidate, but has low-ish usage numbers.

Answer 1

Mimemail or HTMLMail both look like they support Rules.