- Support SMTP, POP3, IMAP4, HTTP, XMPP and SSL/TLS
- Support WebMail and WebAdmin based on built-in web server
- Support CRAM-MD5, DIGEST-MD5, APOP, External/TLS-Certification and GSSAPI/Kerberos
- Support Mail Group, Customize User Policy and Mail audit
- Support popular email client( Outlook, Thunderbird ...)
- Support iCalendar and Mozilla Thunderbird Lightning Plugin
- Support LDAP Address Book based on built-in LDAP server.
- Support the mail with huge size attachment( Maximum size is 2G )
- Support Apache SpamAssassin and How to use Anti-spam Engine in eRisemail
- Recommend Ubuntu or CentOS as host OS Installation
- Project Wiki
