Best Self-hosted Webmail Clients tools in 2026
12 self-hosted open source alternatives in this category
See also:
Calendars & Contacts (CalDAV/CardDAV)Collaborative Office SuitesEmail Servers (SMTP/IMAP)Team Chat & MessagingVideo Conferencing & WebRTCVoIP / SIP & PBX12 services found
mailcow: dockerized
Docker-based email server suite with a web admin interface
Mailcow is a dockerized mail server suite providing SMTP/IMAP, webmail, anti-spam/anti-virus, and domain/mailbox administration via a unified web UI.
Mailu
Docker-based mail server with webmail and admin interface
Mailu is a full-featured mail server distributed as Docker images, providing SMTP/IMAP/POP3, webmail, administration UI, and built-in security and anti-spam features.
Roundcube
Browser-based IMAP webmail client with extensible plugins and skins
Open source webmail client for IMAP with address book, search, folders, and a customizable UI via plugins and skins.
Modoboa
Mail hosting and management platform with web UI and webmail
Modoboa is an open source mail server management platform with a modern web UI, integrating Postfix and Dovecot with admin tools, webmail, calendar, and address book.
SOGo
Scalable groupware server with webmail, calendars, and contacts
Open source groupware suite providing webmail, calendaring, address books, and shared resources via open standards like IMAP, CalDAV, and CardDAV.
iRedMail
Open-source full-featured mail server stack for Linux/BSD
Automated open-source mail server installer bundling Postfix, Dovecot, webmail, anti-spam/antivirus and LDAP/SQL backends for mainstream Linux/BSD.
Gmail Cleaner
Web-based GUI for bulk Gmail unsubscribe and inbox cleanup
Privacy-focused Gmail cleanup app to bulk unsubscribe, delete emails by sender, mark as read, archive messages, and manage labels using the Gmail API.
SnappyMail
Lightweight web-based email client for IMAP accounts
SnappyMail is a fast, modern webmail client (RainLoop fork) focused on performance, privacy, and secure IMAP access with optional PGP support and admin controls.
Nextcloud Mail
Webmail client app for Nextcloud (IMAP/SMTP)
Nextcloud Mail is a webmail app that connects to IMAP/SMTP accounts, offering a unified inbox and deep integration with other Nextcloud apps like Contacts and Calendar.
Zimbra Collaboration
Enterprise email, calendar, contacts, and collaboration suite
Self-hosted enterprise collaboration suite providing email, webmail, calendaring, contacts, and administration for organizations.
b1gMail
Web-based email and collaboration suite for running hosted email services
Open-source webmail and groupware offering email, contacts, calendar, cloud drive, tasks, notes and an admin control panel for multi-tenant email services.
SquirrelMail
Browser-based IMAP webmail client written in PHP
Lightweight PHP webmail client for IMAP/SMTP servers, offering a simple interface, plugin extensibility, and broad compatibility with standard mail backends.