GPGMail!

Secure email with absolutely no compromises, brought to you by MIT and CERN scientists.

Tutanota is a free and open source web-mail client that focuses on privacy. There's also an Android and an iOS app. All data is stored encrypted and can not be searched, i.e. for commercial usage. It offers dead easy end-to-end encryption.

Enigmail is a security extension to Mozilla Thunderbird and SeaMonkey. It enables you to write and receive email messages signed and/or encrypted with the OpenPGP standard.

Mailvelope is a browser extension that allows to exchange encrypted emails following the OpenPGP encryption standard.

Kolab Now, formerly MyKolab, is a fully featured secure collaboration and communication service that is easy to use on any device.

mailbox.org offers a secure e-mail account for home and business use. The domain name, [email protected], is easy to remember and can be understood anywhere in the world. They have been operating e-mail accounts for more than 20 years and are a highly reliable service provider.

Disroot is a project based in Amsterdam, it is maintained by volunteers and depends on the support of its community.

MsgSafe.io provides private, encrypted, online communication with layers of security you can trust. With rocketing growth online and improvements to computer capacity, governments and private sector are collecting and sharing information on every facet of people’s lives. MsgSafe.io is dedicated to actively improving privacy protection with innovative technology.

AnonyMail is an anonymous and privacy-centered email client that can be accessed from both the clearnet and as a Tor hidden service.

SCRYPTmail is true end-to-end encrypted email service. Email and meta data, i.e sender / recipient are encrypted when you communicate within scryptmail domain.

An extension to send secure, encrypted messages through Gmail.

FlowCrypt (formerly CryptUp) lets you Encrypt Gmail with PGP in 60 seconds. Easiest end-to-end encryption for Google Email.

WebPG is a free, open source suite of tools to bring GnuPG/PGP (gpg, gnupg) to the browser, in an effort to make cryptographic methods usable, safe and accessible to the common man.WebPG encompasses several projects, from the backend technology that interfaces with GnuPG/PGP (gpg, gnupg), to the user interface utilities that bring those methods to the browser.

Lockbin is a web application for sending private email messages and files. People use it to send things like credit card numbers or confidential information.