Rated 4 out of 5 stars

This is great for an organization which uses Thunderbird and has to preserve privacy. It works exactly as it says it does, and the ability to customize settings is great.

The only problem we find is that when sending to a mailing list from Mac Contacts, the entire list is considered as one address and so regardless of the number of addresses in the list, the pop-up is not triggered to suggest using BCC. When using lists within the TB personal address book, the add-on behaves as expected.

One other thing - it would be nice to be able to remove the check box that says "When sending, convert all To and CC recipients to BCC" so it wasn't even an option. Unchecking the "enable change all recipients" in preferences doesn't seem to have this effect.

This review is for a previous version of the add-on (3.3.1). 

Hello and thanks. Please use the email link provided on this addon's page for support. Having ANY mailing list on an email sent as TO or CC should result in a warning unless auto-BCC is enabled. So please contact the developer as perhaps you have found a new bug. Thanks!