Relevant Products: Exclaimer Cloud - Signatures for Office 365 | Exclaimer Cloud - Signatures for G Suite
Query
You want to apply signatures to emails sent from shared mailboxes using send-as permissions in Exchange.
Answer
Server-side signatures can be applied to emails sent from shared mailboxes in the same way as you would for a standard user.
Please see How to apply a server-side signature.
Note: In order for the shared mailboxes data to be successfully synchronized with Exclaimer Cloud, please ensure that the feature has been enabled for your tenant. Please get in touch with the Sales team to have this feature enabled.
For more information, see: Signatures are not applied to emails from shared mailboxes.
For more information, see: Signatures are not applied to emails from shared mailboxes.