GnuPG is a crypto framework that can be used by other applications. This page lists some Free Software email clients you may use.
Other lists (last checked 2021-12-02)
- openpgp.org/software includes proprietary software application.
- GnuPG.org has a number of outdated entries.
Claws Mail (GNU/Linux, Windows, Mac)
Until Version 2.2.6 Gpg4Win came with Claws Mail; an email-Client that supports GnuPG crypto natively. Since then Claws is available as a separate package to ease maintenance of both packages. (The Gpg4win Initiative originally created the windows installer of Claws many years ago and the Claws Initiative now maintains it.)
Mailvelope for webmail providers
Mailvelope is a browser add-on that you can use in Chrome, Edge and Firefox with webmail providers to send and receive crypto emails.
(also known to some as KMail2)
(Should be build with and enabled gpgme support to have the first grade GnuPG integration.)
Enigmail (GNU/Linux, Windows, Mac)
Enigmail is a plugin for Postbox and on Interlink Mail & News (which are forks of elder Thunderbird versions (v <= 68).
You can find the latest release on Enigmail's homepage.
outdated / in Dev /misc
- /Thunderbird >= 78 has its own implementation but can still use GnuPG for secret key operations.
- https://github.com/Meddington/OutlookPrivacyPlugin/ An add-in for Outlook 2010, 2013 and 2016. Works only with an outdated Gpg4win version and cannot send emails in OpenPGP/MIME format (which is the recommended standard) (last checked 2021-12-02)