A configurable email client with encryption and key management built in.

Secure9 Mail is a free and open-source email client built on K9 Mail v2.9. It adds AES encryption, as well as key management and key agreement through Diffie-Hellman.

此版本中的新功能：

***0.8.6 adds:

*SHA256 hashing for pins

*Base64 ciphertext encoding

*New key setup utilizes contact list

*Minor bug fixes, performance improvements

*Pin automatically converted to SHA256 hash