OOO Replies and Calendar Invites in O365
Microsoft Office 365
As a workaround, users can add a screenshot of their signature to their OOO reply. The URLs will be disabled, but this is a good solution to keep brand consistency while out of the office.
Gmail and Other Email Applications
The signature will transform normally on Gmail's vacation responder and on other applications! Paste in your signature block as normal and it will deliver a transformed signature.