Available for Microsoft 365 customers
No limit on number of users
Using Outlook with a Microsoft 365 subscription (Outlook on Windows, and Outlook on the web).
Outlook must be installed with the license included in your o365 subscription
Some Microsoft subscriptions do not include Outlook desktop https://www.microsoft.com/fr-fr/microsoft-365/business/compare-all-microsoft-365-business-products
o365 messaging only
Available OWA and Outlook desktop
Available on Windows and MAC
[WINDOWS]
Minimum Windows version required
Event-based add-ins in Outlook on Windows require a minimum of Windows 10 version 1903 or Windows Server 2019 version 1903 to run.
https://docs.microsoft.com/en-us/office/dev/add-ins/outlook/autolaunch
Minimum Outlook version required by update channel :
For users on the current channel: v16.0.14026.20000
For users on the monthly channel: v16.0.14131.20000
For users on the semi annual channel: v16.0.14326.10000
How to know your M365 update channel?
In Outlook desktop, click on File / Office Account / About

How to know the version of your Outlook Windows?
In Outlook desktop, click on File / Account Office / About

[MAC]
Compatible only with the new version of Outlook
How to activate the new version of Outlook for MAC?
1/ Activate the new Outlook version via the toogle on the top right
2/ Click on "Open the new Outlook", Outlook will automatically restart with the new version

Minimum Outlook version required: 16.54 (21101001)
How to know the version of your Outlook MAC?
Click on Outlook menu at the top left, click on "About Outlook".


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