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CloseReview for Secure Addressing by Taylor
Rated 5 out of 5 stars
This is a great addon for anyone who forgets to double-check (or should be double-checking) who and what they're sending in their emails. This extension worked flawlessly until the release of Thunderbird 45 (as of Secure Addressing v1.6) - the extension now prevents messages from being sent.
This review is for a previous version of the add-on (1.6).To create your own collections, you must have a Mozilla Add-ons account.