Kerio Connect Alternatives [Page 3]

Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

MailEnable is a Windows based mail server and email server program that is packed with the state of the features and functions like antivirus and spam filtering system, webmail management system, cardDAV, CalDAV and much more.

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.

Open Source

Mailu is a simple yet full-featured mail server as a set of Docker images.

A fully fledged, free email server solution, an open source project (GPL v2).

Open Source

Open-Xchange Server 6 is the most advanced Linux based Groupware solution f.

SmarterMail is a next generation email management server that is offering several business collaboration and communication features as well.

Red e App is a mobile communication platform that efficiently mirrors your companys organizational structure, giving HQ immediate access to employees in the field, on the floor, and everywhere in between.

Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface.

Simple, easy and secure mail server with a convenient and simple interface.

IceWarp integrates all communication & collaboration features in one unified solution.

paid Free Trial $2.8 / Monthly (Lite)

Google's encompassing suite of cloud-based business apps.

Self hosted modern mail server

Open Source