Rated 5 out of 5 stars

by François on April 23, 2026 ·

Very nice addon to show complete AUTH information. Don't forget to go in your SPAM folder to see why your SPAMs are there! (At least for the mails that were not put there by Thunderbird Junk detection). Very instructive!

Rated 5 out of 5 stars

by Damon on April 11, 2026 ·

This is a neat extension that provides a solid, easy-to-read analysis of all the security-related headers (Received, SPF, DKIM, DMARC, ARC) and also a basic summary of external resources in the body (links, images). Perfect for mail nerds and those wanting to understand how modern mail protocols work in their inbox. My one (minor) criticism is labeling unknown domains in body content as "suspicious", when they merely are unknown to the extension; perhaps a more appropriate adjective would be "untrusted"). The user can manually indicate the domain is trusted.

This review is for a previous version of the add-on (1.1.5).