Plesk Premium Email, powered by Kolab
Provide a wider range of advanced mail and collaboration services to your
customers with Plesk Premium Email, powered by Kolab.
With this Open Source Groupware server you can:
Integrate calendars, tasks, files, notes, and contacts into your email
Enable your users to share mail and files with colleagues and work in teams
on common tasks,
Allow users to synchronise their schedules, notes, contacts with mobile
Add more functionality to your web client without sacrificing any of the
Connect to Kolab using popular groupware clients, such as Outlook,
Thunderbird and Kmail,
Protect your web mail against Cross-Site Request Forgery attacks and other
threats that make other services insecure.
Make your web mail and online collaboration suite faster and more
responsive thanks to Kolab's smart asset delivery system.
Plesk Premium Email is powered by Kolab, the
popular fully-featured Open Source secure mail and collaboration server. At its
core it provides all the features associated with a top tier collaboration
servers, such as email, calendar, contacts, tasks, notes and files.
Kolab helps increase the productivity and coordination of teams through its
advanced sharing, scheduling and collaborative features. Users can synchronise
their agendas across devices, including iOS, Android, MacOS X, Windows and
The Kolab web client is intuitive and clear, and its Open Source web client
mail module, Roundcube, is used by millions of users daily. It is also much
safer than any other alternative because it protects your users against
Cross-Site Request Forgery attacks and other threats that make other services
insecure. It is also faster and more responsive thanks to its smart asset
Kolab is also compatible with most popular desktop clients, such as Outlook
2013+, Thunderbird, Apple Mail, eM Client, Kmail and many more.
Functions provided by Plesk Premium Email powered by Kolab:
Powerful email server, including access via IMAP/POP3/SMTP
Scheduling / Calendars
Contacts / Address book
Cloud file storage, including access via WebDAV
Attractive, modern web client
Compatibility with Outlook 2013 and above, Apple Mail, Thunderbird and others
Plesk Version and Component Support
This extension supports Plesk Onyx (and later) with Dovecot and Postfix on the
- CentOS 7,
- Debian 8, and
- Red Hat Enterprise Linux 7,
- Ubuntu 16.04.