ProtonMail
Open Source
ProtonMail is an end-to-end encrypted email service.
Yandex.Mail
Free
Yandex.Mail is a free email service.
Kolab Now
Commercial
Kolab Now is a web-based email and groupware service, based completely on free and open-source software.
Tutanota
Open Source
Tutanota is an open-source end-to-end encrypted email software and freemium hosted secure email service.
Enigmail
Open Source
Enigmail is a data encryption and decryption extension for Mozilla Thunderbird and the SeaMonkey internet suite that provides OpenPGP public key e-mail encryp…
Mailvelope
Open Source
Mailvelope is a free software for end-to-end encryption of email traffic inside of a web browser (Firefox or Chromium) that integrates itself into existing we…
Compare GPGMail with alternatives
Compare Yandex.Mail and GPGMail and decide which is most suitable for you.