Email Encryption

https://www.openpgp.org/software/

All email applications on this page support the OpenPGP standard either directly or with additional software. The authors of this webpage are not actively participating in the development of each of these third-party apps. No security audits have been done by us and, thus, we cannot provide any security guarantees.

Windows

• Claws Mail

• eM Client

• EverDesk

• The Bat!

• Outlook:

  • gpg4o

  • Gpg4win

  • p≡p

• Postbox using Enigmail

• Thunderbird:

  • Autocrypt for versions <78

  • Enigmail for versions <78

Mac OS

• Apple Mail: GPGTools

• Canary Mail

• Mutt

• Postbox using Enigmail

• Thunderbird:

  • Autocrypt for versions <78

  • Enigmail for versions <78

Android

• FairEmail

• FlowCrypt

• K-9 Mail: OpenKeychain

• p≡p

• R2Mail2

iOS

• Canary Mail

• FlowCrypt

• iPGMail

• PGPro

• Safe Easy Privacy

Linux

• Claws Mail

• Evolution: Seahorse

• KMail: Kleopatra

• Mutt

• Thunderbird:

  • Autocrypt for versions <78

  • Enigmail for versions <78

Browser Plugins

• FlowCrypt (Gmail)

• Mailvelope

• Psono

Webmail Provider with Browser Plugins

A lot of webmail providers support email encryption via the OpenPGP standard using Mailvelope. The Mailvelope website provides a list of supported webmail providers.

Providers with help pages:

• GMX

• Posteo

• WEB.DE

Pre-configured (authorized) providers:

• Gmail

• mail.ru

• Outlook.com

• volny.cz

• Yahoo

• Zoho Mail

Other authorized providers with API support:

• mailbox.org

• riseup.net

• Roundcube

Webmail Provider with In-Browser Cryptography

In contrast to the previous section, the following webmail providers do not require the installation of additional browser plugins, instead OpenPGP is implemented in JavaScript provided directly by the website. While these are easier to set up and provide basic security guarantees with OpenPGP, some people don’t consider these “end-to-end secure”.

• Hushmail (limited OpenPGP support)

• Mailfence

• postale.io

• ProtonMail

Project Missing?

If a project is missing and you would like it included, please open a pull request at github.com/OpenPGP/openpgp.org. Please note that we only include published, working software, which implements the standard. The software is ordered alphabetically within the sections.