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Available on Windows and MAC
Simultaneous deployment on OWA and Outlook Desktop (and mobile soon!)
Also compatible with the new One Outlook
Prerequisites for installing and using the Letsignit Add-in.
Subscriptions and licenses
Letsignit Add-in is only available to users with a Microsoft 365 subscription.
Outlook must be installed with the license included in your M365 subscription (please note that some Microsoft subscriptions do not include Outlook Desktop).
Compatible O365 licences
Microsoft 365 Apps for Business
Microsoft 365 Business Standard
Microsoft 365 Business Premium
Microsoft 365 E3, E5, F3
Please note that the Microsoft 365 Business Basic license will only allow you to deploy the Add-in on webmail (OWA): https://www.microsoft.com/fr-fr/microsoft-365/business/compare-all-microsoft-365-business-products
On Windows
Minimum Outlook version required, depending on 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
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/fr-fr/office/dev/add-ins/outlook/autolaunch
A more recent version is required for the Internal Audience feature.
How to know your M365 update channel?
In Outlook Desktop, click on File / Office Account / About
How to know the version of your Outlook ?
In Outlook Desktop, click on File / Account Office / About
On Mac OS
Compatible only via Outlook's new UI on Mac
Minimum 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".
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
Proxy permissions
If your local network includes a proxy to filter and secure your internet requests, it is necessary to allow the following 2 URLs to be output for the Add-in to work properly:
Note that depending on the type of proxy (McAfee Web Gateway for example), it may be necessary to set this syntax:
*cloud.letsignit.com*
*storage.letsignit.com*
*aladin.letsignit.com*
It is necessary to test the Add-in if your security does 'Man-In-The-Middle' and/or SSL decryption and/or Java inspection because the requests are formatted with a certificate to Letsignit infrastructures.
If you find that you cannot connect or that the add-in does not insert signatures, this may be the case.
The proper functioning of the Letsignit Add-in can sometimes be impacted if other Add-ins are deployed to a user. This is often the case with spell checkers or dictionaries.
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