Free discovery
Free Email tools
Verified FREE and FREEMIUM tools listed in Email.
squirrelmail.orgfree
Another browser-based IMAP client. ([Source Code](https://sourceforge.net/p/squirrelmail/code/HEAD/tree/)) `GPL-2.0` `PHP`
roundcube.netfree
Browser-based IMAP client with an application-like user interface. ([Source Code](https://github.com/roundcube/roundcubemail)) `GPL-3.0` `PHP/deb`
cypht.orgfree
Feed reader for your email accounts. ([Source Code](https://github.com/cypht-org/cypht)) `LGPL-2.1` `PHP`
sympa.communityfree
Mailing list manager. ([Source Code](https://github.com/sympa-community/sympa)) `GPL-2.0` `Perl`
schleuder.nadir.orgfree
GPG-enabled mailing list manager with resending-capabilities. ([Source Code](https://0xacab.org/schleuder/schleuder/tree/master)) `GPL-3.0` `Ruby`
docs.mailman3.orgfree
Web user interface to access GNU Mailman. ([Source Code](https://gitlab.com/mailman/postorius/)) `GPL-3.0` `Python`
phplist.orgfree
Newsletter and email marketing with advanced management of subscribers, bounces, and plugins. ([Source Code](https://github.com/phpList/phplist3)) `AGPL-3.0` `P…
mlmmj.orgfree
Mailing list management made joyful. ([Source Code](https://codeberg.org/mlmmj/mlmmj)) `MIT` `C`
mautic.orgfree
Marketing automation software (email, social and more). ([Source Code](https://github.com/mautic/mautic)) `GPL-3.0` `PHP`
list.orgfree
Manage electronic mail discussion and e-newsletter lists. ([Source Code](https://gitlab.com/mailman/)) `GPL-3.0` `Python`
keila.iofree
Reliable and easy-to-use newsletter tool (alternative to Mailchimp and Sendinblue). ([Demo](https://app.keila.io), [Source Code](https://github.com/pentacent/ke…
wiki.list.orgfree
Access GNU Mailman v3 archives. ([Demo](https://lists.mailman3.org/), [Source Code](https://gitlab.com/mailman/hyperkitty)) `GPL-3.0` `Python`
proofpoint.comfree
Message transfer agent (MTA). `Sendmail` `C/deb`
opensmtpd.orgfree
Secure SMTP server implementation from the OpenBSD project. ([Source Code](https://github.com/OpenSMTPD/OpenSMTPD/)) `ISC` `C/deb`
haraka.github.iofree
Fast, highly extensible, and event driven SMTP server. ([Source Code](https://github.com/haraka/Haraka)) `MIT` `Nodejs`
exim.orgfree
Message transfer agent (MTA) developed at the University of Cambridge. ([Source Code](https://git.exim.org/exim.git)) `GPL-3.0` `C/deb`
emailrelay.sourceforge.netfree
A small and easy to configure SMTP and POP3 server for Windows and Linux. ([Source Code](https://sourceforge.net/p/emailrelay/code/HEAD/tree/)) `GPL-3.0` `C++`
courier-mta.orgfree
Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based calendaring and scheduling services. ([Sour…
blitiri.com.arfree
SMTP (email) server with a focus on simplicity, security, and ease of operation. ([Source Code](https://blitiri.com.ar/git/r/chasquid/)) `Apache-2.0` `Go`
dovecot.orgfree
IMAP and POP3 server written primarily with security in mind. ([Source Code](https://github.com/dovecot/core)) `MIT/LGPL-2.1` `C/deb`
wildduck.emailfree
Scalable no-SPOF IMAP/POP3 mail server. ([Source Code](https://github.com/zone-eu/wildduck)) `EUPL-1.2` `Nodejs/Docker`
stalw.artfree
All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features. ([Source Code](https://github.com/stalwartlabs/stalwart)) `AGPL-3…
simplelogin.iofree
Open source email alias solution to protect your email address. Comes with browser extensions and mobile apps. ([Source Code](https://github.com/simple-login/ap…
docs.postalserver.iofree
Complete and fully featured mail server for use by websites & web servers. ([Source Code](https://github.com/postalserver/postal)) `MIT` `Docker/Ruby`