My Org uses Outlook 2021 LTSC and I have been tasked with setting up a tool to manage email signatures Org wide. I have tried a few, but Outlook 2021 has the same limitation with all of them. Signatures are not automatically added to the email compose pane, which is a requirement. I just trialed SigSync and it meets every requirement I have. The only problem is it will only automatically add the signature to the compose pane if you Pin the add-in. It's not feasible for me to manually pin it on every computer in our org, so I'm trying to find a way to do so via PowerShell or with a script run via GPO.
The issue I'm having is I can't find any info on where the pinned status of the add-in is stored. I haven't seen anything in the registry or in any xml/json files in Outlook folders in AppData. I'm not even sure if its stored locally or not.
Any insight would be appreciated.
