Leave Microsoft 365

Microsoft is easier to leave than Google in one way and harder in another: the files are ordinary Office formats, so nothing is trapped, but the mail and the calendar are welded together and everything your colleagues send you is a .docx.

1. 01

   Move the files

   A weekend

   Nextcloud's Windows client handles the folder. The Office integration is the part that does not come with it.

   Instead of Microsoft OneDrive

2. 02

   Replace the editors

   An afternoon

   ONLYOFFICE has the best .docx fidelity. Collabora inside Nextcloud is the better experience if the files are already there.

   Instead of Microsoft 365

3. 03

   Move the chat

   A weekend

   Mattermost for channels and threads; Jitsi for the calls. The calendar invites are the piece nobody misses until they do.

   Instead of Microsoft Teams

4. 04

   Move the mail

   A week of evenings

   Stalwart or Mailcow, with shared mailboxes planned before the first migration, not after.

   Instead of Microsoft Outlook

Every step links to a judged swap: what to run, what it costs, and what you lose.