Kerio Connect

6.5easy start · #76of 105
in Online Fax Services

Free trialyes
Well documentedyes
Runs where you workyes

Runs on Android, api, iOS, Linux, Mac, self-hosted, Web, Windows.

Kerio Connect is ranked #76 of 105 in online fax services on The Geeks Club. It runs on Android, API, iOS, Linux, macOS, Self-hosted, Web, Windows. A free trial is offered.

Kerio Connect plans and pricing

All plans

Commercial license (processed through GFI Partners) Licensed by active mailboxes/users · Antivirus, Exchange ActiveSync, and Kerio Anti-spam are individually licensed components support.kerioconnect.gfi.com · 8 Oct 2026

Compared on online fax services

Free plan: No
Admin controls: Yes
Archiving & retention: Yes
Security controls: advanced

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The record

Product: Kerio Connect is an email and instant messaging server with multiple deployment options, Outlook integration, web email, and mobile access.
Collaboration: Kerio Connect Client manages email, chat, calendars, contacts, tasks, and notes.
Deployment: Kerio Connect can run as software on Windows, macOS, or Linux, or as a VMware virtual appliance; the maker’s overview also describes it as available as a hosted service.
Integrations: The product supports Microsoft Outlook, Kerio Outlook Connector, Exchange ActiveSync, Apple applications, and XMPP messaging clients such as Pidgin.
Migration: Kerio Connect supports migrating users and data from Microsoft Exchange and other IMAP services.
Security: Documented protections include password complexity rules, login guessing protection, anti-spoofing, SSL certificates, and S/MIME message signing and encryption.
Spam filtering: SpamAssassin content filtering is enabled by default, while Kerio Anti-spam is an optionally licensed feature powered by Bitdefender.
Backup: Administrators can back up the server configuration and user data and restore the mail system after hardware failure or an upgrade.
Licensing limit: The license sets the number of mailboxes, and active enabled mailboxes count toward that user limit.
Optional components: Kerio Antivirus, Exchange ActiveSync, and Kerio Anti-spam are individually licensed components.
Trial: The maker’s support article says users can register for a free 30-day trial through the GFI website.
API: The product license includes use of the Kerio Connect API on the server, and the maker says there is no royalty fee for API use.
Support: The maker provides a Kerio Connect support portal with knowledge articles and release notes.

Where it ranks on The Geeks Club

Best Online Fax Services in 2026#76 of 105

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Sources

manuals.gfi.com/en/kerio/connect/content/product-overvi· checked 8 Oct 2026
support.kerioconnect.gfi.com/article/112584-kerio-connect-client-ove· checked 8 Oct 2026
support.kerioconnect.gfi.com/article/115493-licenses-in-kerio-connec· checked 8 Oct 2026
support.kerioconnect.gfi.com/article/115515-obtaining-a-kerio-connec· checked 8 Oct 2026
manuals.gfi.com/en/kerio/connect/content/api/getting-st· checked 8 Oct 2026
support.kerioconnect.gfi.com· checked 8 Oct 2026