Rated 4 out of 5 stars

I found a bug on this addon that would bug some people in the future: If a user sends his/her name as "Surname, Name" and we attempt to reply to it, then Conversations assume that pour contact name is "Surname" only and email "Surname" too, of course causing an error when sending the email.
Despite this bug, the whole addon is awesome and should be installed by default on every Thunderbird around the world.

This review is for a previous version of the add-on (2.3.2).