The Outlook Web Access application does not natively allow you to set the default "From" address.
This web browser extension enables you to insert a predefined address into the "From" field of each new message.
If you have a shared mailbox or a group that you have permission to send as, SetFrom helps pre-populate the "From" address.
Current version: 1.0.2
Installation
Testing
The SetFrom extension has been tested with Microsoft Edge and with Google Chrome web browsers.
Warning
What you get after purchase
You will get a link to the CRX file. You should install the extension as described above in the Installation section.
Prices