Enigmail is an appealing and fairly simple to use piece of software designed to function as a Mozilla Thunderbird and Seamonkey extension which provides you with OpenPGP encryption and authentication capabilities, so you can protect the contents of the messages you send and receive.
Donationware
Whats new:>> When creating encrypted messages with hidden subjects, the subject cannot be restored anymore
Importing keys attached to emails does not work
Reading keys from Autocrypt Key Gossip not possible for plaintext emails
Dark theme /? some text hard to read
https://www.enigmail.net
