ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.
Enigmail - Security extension to Mozilla Thunderbird and SeaMonkey
Tutanota - Get your encrypted mailbox for free.
Mailvelope - Mailvelope open source project. OpenPGP in your browser.
mailbox.org - mailbox.org offers a secure e-mail account for home and business use. The domain name, me@mailbox.
APG - Android Privacy Guard (APG) is a free and open source application for ...