Docker Mailserver
Mail ServersProduction-ready, config-driven mail server in a container
Replaces Google Workspace, Microsoft 365
Best LDAP Mail Servers for self-hosting
The 9 best LDAP mail servers you can self-host, ranked by community traction.
mailcow
Mail ServersDockerized full-stack mail server suite
Replaces Microsoft Exchange, Google Workspace
Roundcube
Mail ServersBrowser-based IMAP webmail client
Replaces Gmail, Outlook Web
Modoboa
Mail ServersMail hosting and management platform with a modern UI
Replaces Google Workspace, cPanel Email
iRedMail
Mail ServersFree, full-featured mail server solution
Replaces Microsoft Exchange, Google Workspace
Dovecot
Mail ServersSecure, high-performance IMAP and POP3 server
Replaces Microsoft Exchange
Cyrus IMAP
Mail ServersScalable IMAP and POP server for large deployments
Replaces Microsoft Exchange
Sympa
Mail ServersScalable mailing list management software
Replaces Google Groups
Courier Mail Server
Mail ServersIntegrated mail server with IMAP, POP, and webmail
Replaces Microsoft Exchange
No apps match these filters.
Every option here is open-source and self-hostable, tagged LDAP within the mail servers category. Compare them on the individual app pages for setup difficulty and resource requirements.