DavMail
POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users
POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users to use any mail/calendar client with an Exchange server, even from the internet or behind a firewall through Outlook Web Access.
Strengths
- Released under the GPL-2.0 license
- Written in Java
- Lightweight — runs in 512 MB RAM
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