A fork of the K-9 Mail client with Easy Email Encryption (E3) support.
E3 is a simple and intuitive system for protecting your emails in your IMAP email account. It is compatible with any email service which uses IMAP, including: Gmail, Yahoo, AOL, Yandex, and more.
When you setup this mail client, you are asked to create a new password for encrypting emails that you receive. (This password actually encrypts your E3 private key.)
An encrypted backup of the E3 private key is stored in your email account.
Thereafter, all emails you receive are automatically encrypted and stored in your email inbox.
Note: Since encrypting email slightly increases battery usage, you may consider using the standalone Python E3 client for Windows/Linux/Mac OS found on Github (https://github.com/columbia/py-e3), also by this app developer.
***E3 and the application developer are NOT responsible for any lost emails or lost private keys.***