Enigmail

Enigmail 1.9

Free
Encrypt and digitally sign your emails and decrypt and verify messages.
 
1.9.8.1 (See all)

Enigmail is a seamlessly integrated security add-on for Mozilla Thunderbird. It allows you to use OpenPGP to encrypt and digitally sign your emails and to decrypt and verify messages you receive.
Main features:
- Support for inline-PGP (RFC 4880) and PGP/MIME (RFC 3156).
- Per-Account based encryption and signing defaults.
- OpenPGP key management interface.

Info updated on: