Rated 5 out of 5 stars

Nice add-on! I'd like to request the feature: Enable only for the following email accounts: Account 1, Account 2, etc. For some accounts, privacy might not be an issue, eg corporate/business email addresses.

This review is for a previous version of the add-on (0.1.1). 

See ticket [https://trac.torproject.org/projects/tor/ticket/8487] for information on how you can use TorBirdy for specific accounts.