Roundcube Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client... Free Open Source Self-Hosted PHP Cloudron Hostable PGP Encryption Add a feature 136 Like
Mailpile Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and... Free Open Source Mac Windows Linux Web Self-Hosted ... OpenPGP POP3 Support Add a feature 100 Like
Squirrelmail SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure... Free Open Source Self-Hosted PHP On-premises software Add a feature 23 Like
Horde Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards... Free Open Source Web Self-Hosted CalDAV Add a feature 24 Like
NeutronMail Self-hosted server for the ProtonMail client. Free Open Source Web Self-Hosted End-to-end encryption Add a feature 7 Like
Cypht All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into... Free Open Source Self-Hosted Built-in RSS reader End-to-end encryption Modules POP3 Support Add a feature 4 Like
Atmail Email Server Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows. Features: Webmail Calendar Addressbook ... Commercial Linux Web File-sync Group Mail Add a feature 7 Like
PrivMX WebMail Alternative, self-hosted private mail system. End-to-end encryption for messages and attachments. Easy to install and administration. Allows also to create end-to-end... Free Self-Hosted PHP End-to-end encryption Add a feature 1 Like
Postaci Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and fully MIME-compatible. While using POP3 mode... Free Open Source Linux No features added Add a feature 0 Like
