How to Use Another “From” Address (Webmail)
Using another email address to send from in Webmail
Click on the three dots just above where the dates are on your received email. It looks like this:
Choose “Accounts” and you will see this:
Double click on your account and you will see a link a the bottom left called “Aliases”
Click Aliases, Click New and then this screen will show up:
Enter the Name, Email address and signature (if desired) and click Save. It will show up in your Aliases list now. When you compose an email, you can now choose the alias from the drop down list in the “From” area.