Rated 5 out of 5 stars

by Piemme Pastore on Feb. 2, 2012 ·

To solve the problem of the double icon in the tray see here:
http://kb.mozillazine.org/Run_multiple_copies_of_Thunderbird_at_the_same_time

This review is for a previous version of the add-on (1.0.1-signed.1-signed).