Rated 5 out of 5 stars

Works well with TB 68.12. Doesn't work with Thunderbird conversations add-on. Sorry for earlier review.

Αυτή η αξιολόγηση γράφτηκε για παλιότερη έκδοση του πρόσθετου (4.1.1). 

The first screen shot shows you where the MailHops Button appears and is located in the upper right in the message header buttons above the time.