If this is something of interest, you can try it free for 14-days. Exclaimer Cloud - Signatures for Office 365 can do this. The last approach would be using a third-party solution which would automate this all, and ensure the correct signature under every reply. With this approach, the signature would only appear at the bottom of every email, and not under every reply. There is also the option to create a transport rule in Office 365 with the append disclaimer action, and only apply it to that shared mailbox. You could get the users to create an additional signature in Outlook for the shared mailbox address, however that would require them selecting the signature in the drop-down menu. There are a few approaches you can take to do this, depending on if you want to go a manual route or automated. Is there a way to add the shared mailbox to the list of email account to choose from? I have tried assigning a signature to the shared mailbox using File-> Options -> Mail -> Signatures but the shared email address is not available to choose from. But if the user changes the from field to it will still use signature. Please let me know how i could resolve this.ĮDIT: For clarification, the user (user A) currently has their own email address and a shared mailbox which is also shared with user B and user C.Ĭurrently, when user A composes a new email it automatically generates a signature for the user. When I go to signatures on Outlook and choose the email account for the default signature it only gives the option of the users email account not their shared mailbox. My users are using Outlook 2016 and need unique signatures for their shared mailbox. I have office 365 and have a few shared mailboxes linked to users accounts.

How to add signature in outlook 2016