- Email server that works with Outlook, Outlook Express, Mozilla Thunderbird, Apple Mail, Windows Mail, Qualcomm Eudora, and the email clients built into many cell phones.
- Shared calendar server that works with Outlook 2007, Google Calendar, Apple iCal and Mozilla Sunbird
- Customizable AJAX Web Client that works with Internet Explorer, Mozilla Firefox and Apple Safari and Opera
- ActiveSync compatible server that works with the major smartphones to push email, calendar and contact updates over-the-air
- Extensive security including SSL/TLS, Authenticated SMTP, RBL & RDNS lookup, Directory Harvest Attack Protection (DHAP), Domain Keys Identified Mail (DKIM)
- Anti-spam including Greylisting, white list and black list
- Anti-virus protection
- MIME-aware sieve filtering