Plesk Extension Development


Plesk Premium Email, powered by Kolab, is a secure and advanced groupware solution featuring
e-mail, calendars, contacts, file management, tasks and notes.
plesk store page


Seafile is a self-hosted file cloud software system with apps for every desktop, laptop and mobile device.
Share libraries, directories and files with other users, external third parties and integrate this in to Plesk Premium Email.
plesk store page

Collabora Online

Collabora Online is a powerful LibreOffice-based online office that supports all major document, spreadsheet and presentation file formats,
which integrates with Plesk Premium Email. Key features are collaborative editing and excellent office file format support.
plesk store page


Mattermost is a flexible, open source messaging platform that enables secure team collaboration.
Mattermost integrates with Plesk Premium Email, acting as a chat module for the Plesk Premium Email webclient.
plesk store page