Mailpile is a modern, fast email client with user-friendly encryption and privacy features. Mailpile runs on your desktop or laptop computer and you interact with it by using your web browser. Mailpile places great emphasis on providing a clean, elegant user interface and pleasant user experience. In particular, Mailpile aims to make it easy and convenient to receive and send PGP encrypted or signed e-mail. Mailpile also does not force you to change e-mail addresses, it works with the e-mail addresses you already have.
Mailpile will by default encrypt all configuration data, contacts and the search index. It may also encrypt downloaded e-mail, depending on user preferences. Encryption is either provided by the GnuPG program, or OpenSSL"s AES support. Mailpile doesn"t store your private key on a mail server. You install Mailpile on your own computer, which keeps your key nice, safe, and under your control.
Mailpile is designed to be fast and responsive, outperforming "the cloud" even on slow computers. And it works even when the Internet is down.
Download: Mailpile Beta 3 | 18.1 MB (Open Source)
Links: Mailpile Home Page | Other Operating Systems