As soon as you save the modifications to the signature, you can use it in your upcoming emails from that device. Outlook is one of the best email apps for Android and iOS devices, and millions use it.

iOS, Android, or other non-Windows devices. The browser being used for accessing Outlook on the web also must have the S/MIME extension installed. If it is not, you will see a message like one of the ...

However, managing email signatures across an organization ... Outlook Desktop/Web, and Outlook App on iOS and Android, providing a seamless experience across your organization.