Review for Show InOut by Realraven (Axel Grude)
Rated 4 out of 5 stars
Good idea, but... it would be REALLY NICE if it could be configured for the "Out" Category to be triggered by a multiple email addresses (handy if you're working with outlook at work and frequently forward stuff home or simply have multiple Email addresses)
This review is for a previous version of the add-on (0.5.1).Just add identities to your thunderbird account with your additional E-Mail addresses.
To create your own collections, you must have a Mozilla Add-ons account.