Kerio Connect

Enterprise-class Email, Calendars, Contacts, Tasks, Chat, and More

The award-winning messaging and collaboration solution, Kerio Connect, meets the needs of small and mid-sized business. It offers unmatched deployment flexibility and broad mobile device support. Business users enjoy support for their favorite email client and Kerio Connect Client via their favorite web browser.

Kerio Connect is stable — so you can focus on your business rather than unexpected downtime and recovery. Deployment and administration are simple by design. With low licensing, service and hardware costs, Kerio Connect delivers measurable business value over other offerings


Email and Notes

  • IMAP, POP3 and EWS protocol support
  • Multiple email addresses per user
  • Email aliases
  • Public and shared folders
  • Out of Office messages
  • Message filters and rules
  • Delegation
  • User managed spam whitelist
  • Delivery and read receipt
  • Multi-language support
  • Full text search
  • Desktop notifications

Calendars and Tasks

  • Synchronization (CalDAV and EWS)
  • Public and shared calendars
  • Privacy flag
  • Scheduling and response tracking
  • Recurring events with exceptions
  • Reserve conference rooms/resources
  • Labels
  • Free/Busy assistance
  • Reminders
  • Delegation
  • Travel time
  • Comment on invitation replies
  • Print view
  • Agenda view
  • Tasks with reminders
  • Search
  • Desktop notifications


  • Synchronization (CardDAV and EWS)
  • Remote lookup (LDAP)
  • Public and shared contacts
  • Global address list
  • Create contact from email
  • Contact groups
  • Contact photos
  • Click to Call with Kerio Operator

Instant Messaging

  • Jabber/XMPP protocol support
  • Group chat
  • Chat rooms
  • Presence
  • Audio and video chat
  • File transfer
  • Web based chat
  • Global address list with photos
  • Desktop notifications


  • Exchange ActiveSync 14.1 (option)
  • CalDAV/CardDAV/IMAP client support
  • Kerio Connect Sync app for Android
  • Global address list synchronization
  • Public and shared folders
  • Automatic configuration for iOS


  • Kerio Connect Client (web based)
  • Kerio Connect Client (Windows & Mac)
  • Microsoft Outlook (Windows & Mac)
  • Windows 10 Mail and Calendar
  • Apple Mail, Calendar, Contacts, Messages, and Reminders


Server Management

  • MyKerio centralized web based management to monitor and manage multiple Kerio deployments
  • Remote web based administration
  • Administration API
  • Customizable login page
  • One-click software updates
  • Automated server backup
  • Multiple domains
  • Custom logo per domain
  • Distributed domains
  • Storage quotas and notifications per domain
  • SMTP server relay routing (smart host)
  • Email archiving per server and per domain
  • Moderated mailing lists with NNTP
  • Recover deleted items
  • Status, activity, and debug monitoring
  • Audit logs, charts, reports, and statistics
  • Message queue status & configuration
  • IMAP & Exchange migration tools
  • Domain Footers with variable fields
  • IPv6 Support


  • Password policy with complexity
  • Password guessing protection
  • Secure connectivity (TLS 1.2)
  • Require secure connectivity
  • Perfect Forward Secrecy support
  • Signed and custom SSL certificates
  • Encrypted email (S/MIME)
  • DKIM signatures
  • SMTP submission
  • Directory harvest attack protection
  • Sender anti-spoofing protection
  • Remote mobile device wipe

Content Filtering

  • Integrated anti-virus (option)
  • Standard spam filter
    (SpamAssassin with SURBL)
  • Advanced spam filter: Kerio Anti-spam
    (powered by Bitdefender) (option)
  • Spam repellent (SMTP greeting delay)
  • Internet and custom blacklists
  • Greylisting
  • Anti-spoofing (SPF)
  • Attachment filtering
  • Server based filtering rules
  • Message size limits

User Management

  • Microsoft Active Directory
  • Apple Open Directory
  • Linux PAM
  • Local user database
  • Import user list
  • Account settings templates
  • Mailbox quotas and notifications
  • Access policies based on protocols
  • Data retention policy (Items clean-out)