Puntuado con 3 de 5 estrellas

Potentially good ... But, different to what the dev says, in the latest TB, I see no setting for Identity chooser under the addons setting..?

Esta valoración es de una versión anterior del complemento (1.9.7). 

Thunderbird changed the location where users can access addon settings with version 60. Please check this support topic: https://support.mozilla.org/en-US/kb/new-thunderbird-60#w_new-menu-location-of-add-on-options