Thunderbird is a free, open-source, cross-platform email, newsgroup, news feed, and chat (XMPP, IRC, Matrix) client developed by the Thunderbird community, and previously by the Mozilla Foundation.

Homepage (https://thunderbird.net)

* Google Play (https://play.google.com/store/apps/details?id=net.thunderbird.android)

* GitHub (https://github.com/thunderbird/thunderbird-android/releases)

* Windows (https://thunderbird.net)

* macOS (https://thunderbird.net)

* Linux (https://thunderbird.net)

* Flathub (https://flathub.org/apps/details/org.mozilla.Thunderbird)

When replying to someone on a mailing list in Thunderbird Mobile, the "reply" option may also include the mailing list. For more information see thunderbird/thunderbird-android #3738 (https://github.com/thunderbird/thunderbird-android/issues/3738).

We recommend changing some of these settings to make Thunderbird Desktop a little more private.

These options can be found in → Settings → Privacy & Security.

* [ ] Uncheck Remember websites and links I've visited

* [ ] Uncheck Accept cookies from sites (1)

1. You may need to keep this setting checked when you're logging in to some providers such as Gmail, or via an institution’s SSO. You should uncheck it once you log in successfully.

* [ ] Uncheck Allow Thunderbird to send technical and interaction data to Mozilla

'thunderbird-user.js' (https://github.com/HorlogeSkynet/thunderbird-user.js) is a set of configuration options that aims to disable as many of the web-browsing features within Thunderbird Desktop as possible in order to reduce attack surface and maintain privacy. Some of the changes are backported from the Tcf362fArkenfox project.

Apple Mail is included in macOS and can be extended to have OpenPGP support with Tcf362fGPG Suite, which adds the ability to send PGP-encrypted email.

Homepage (https://support.apple.com/guide/mail/welcome/mac)

Currently, GPG Suite does not yet (https://gpgtools.com/sonoma) have a stable release for macOS Sonoma.

Apple Mail has the ability to load remote content in the background or block it entirely and hide your IP address from senders on macOS (https://support.apple.com/guide/mail/mlhl03be2866/mac) and iOS (https://support.apple.com/guide/iphone/iphf084865c7/ios).

FairEmail is a minimal, open-source email app which uses open standards (IMAP, SMTP, OpenPGP) and minimizes data and battery usage.

Homepage (https://email.faircode.eu)

* Google Play (https://play.google.com/store/apps/details?id=eu.faircode.email)

* GitHub (https://github.com/M66B/FairEmail/releases)

Evolution is a personal information management application that provides integrated mail, calendaring, and address book functionality. Evolution has extensive documentation (https://gnome.pages.gitlab.gnome.org/evolution/help) to help you get started.

Homepage (https://gitlab.gnome.org/GNOME/evolution/-/wikis/home)

* Flathub (https://flathub.org/apps/details/org.gnome.Evolution)

Kontact is a personal information manager (PIM) application from the KDE (https://kde.org) project. It provides a mail client, address book, RSS client, and an organizer.

Homepage (https://kontact.kde.org)

* Linux (https://kontact.kde.org/download)

* Flathub (https://flathub.org/apps/details/org.kde.kontact)

Mailvelope is a browser extension that enables the exchange of encrypted emails following the OpenPGP encryption standard.

Homepage (https://mailvelope.com)

* Firefox (https://addons.mozilla.org/firefox/addon/mailvelope)

* Chrome (https://chrome.google.com/webstore/detail/mailvelope/kajibbejlbohfaggdiogboambcijhkke)

* Edge (https://microsoftedge.microsoft.com/addons/detail/mailvelope/dgcbddhdhjppfdfjpciagmmibadmoapc)

NeoMutt is an open-source command line email reader for Linux and BSD. It's a fork of Mutt (https://en.wikipedia.org/wiki/Mutt_(email_client)) with added features.

NeoMutt is a text-based client that has a steep learning curve. It is, however, very customizable.

Homepage (https://neomutt.org)

* macOS (https://neomutt.org/distro)

* Linux (https://neomutt.org/distro)

Please note we are not affiliated with any of the projects we recommend. In addition to Tcf362four standard criteria, we have developed a clear set of requirements to allow us to provide objective recommendations. We suggest you familiarize yourself with this list before choosing to use a project, and conduct your own research to ensure it's the right choice for you.

* Apps developed for open-source operating systems must be open source.

* Must not collect telemetry, or have an easy way to disable all telemetry.

* Must support OpenPGP message encryption.

Our best-case criteria represents what we would like to see from the perfect project in this category. Our recommendations may not include any or all of this functionality, but those which do may rank higher than others on this page.

* Should be open source.

* Should be cross-platform.

* Should not collect any telemetry by default.

* Should support OpenPGP natively, i.e. without extensions.

* Should support storing OpenPGP encrypted emails locally.

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