NOTE: This feature is only available if enabled by IT. Please reach out through [email protected] with your request.
This option will be available under the mailbox where the emails will arrive. If you don't know how to open another mailbox, please follow this guide first:
How to open another mailbox
Once you're in the mailbox, select the email you need to reply, and then follow the instructions on the animated image below:
You'll need to select Other Email Address... if you haven't done this process yet. Once it's done once, it will remember it and keep it on the recently used list as shown above.