Email Clients

Discover free, open source, and secure ways email clients, and some email alternatives you may not have considered.

Email Clients

Thunderbird

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

Website: mozilla.org

OS: Windows, macOS, Linux, BSD.

Claws Mail

Claws Mail Claws Mail is a free and open source, GTK+-based email and news client. It offers easy configuration and an abundance of features. It is included with Gpg4win, an encryption suite for Windows.

Website: claws-mail.org

OS: Windows, macOS, Linux, BSD, Solaris, Unix.

Privacy Email Tools

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Email Alternatives

Bitmessage

Bitmessage Bitmessage is a P2P communications protocol used to send encrypted messages to another person or to many subscribers. It is decentralized and trustless, meaning that you need-not inherently trust any entities like root certificate authorities. It uses strong authentication which means that the sender of a message cannot be spoofed, and it aims to hide "non-content" data.

Website: bitmessage.org

OS: Windows, macOS, Linux.

RetroShare

RetroShare Retroshare creates encrypted connections to your friends. Nobody can spy on you. Retroshare is completely decentralized. This means there are no central servers. It is entirely Open-Source and free. There are no costs, no ads and no Terms of Service.

Website: retroshare.cc

OS: Windows, macOS, Linux.

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