It will not be available in Outlook for Mac or for the Outlook mobile app. Roaming signatures will only be available in Outlook for Windows. No more recreating the same e-mail signature for the same e-mail account setup in Outlook for Windows on multiple devices! When that e-mail account is setup in Outlook for Windows on any devices, the signature will be able to sync uniformly across those devices.
The e-mail signatures will be associated with the e-mail accounts and stored in the respective mailboxes.
Roaming Signatures allow e-mail signatures in Outlook for Windows to be synced to the cloud rather than be stored locally.
