Relevant Product: Exclaimer Cloud - Signatures for Office 365
When an email is sent from a shared mailbox, a signature is not added to the received email message.
This occurs when this feature has not been enabled for your tenant. Please get in touch with the Sales team to have this feature enabled.
To generate signatures, Exclaimer Cloud aggregates data from the Active Directory, however,
- if the feature is disabled, then when Exclaimer Cloud performs a data synchronization, disabled mailboxes are not synchronized.
- if the feature is enabled, all users with a primary SMTP address are synced, even if they are disabled.