[Feature]: O365 Shared Mailbox Synchronization

[ha-diris]

Is your feature request related to a problem?

The standard O365 synchronization works well, however , Shared Mailboxes cannot be synchronised. Not even when appropriate delegate rights are granted to th api

Describe the solution you'd like

Shared Mailbox O365 synchronisation

Additional context

No response

[vanek-Impacts]

With AppId they can

[svarnaslarsa]

how? can you explain?

[vanek-Impacts]

• You choose "Microsoft 365" as Mail provider
• Configure a new app registration at entra.microsoft.com
• grant that app API-(app)permission for Mail.Read.

That should suffice, I have additional permissions for authentication: