Add, edit or delete domains being used in From email addresses.
Access the Advanced Deliverability From Email Domains Tab
Select the circle icon containing the first initial of your name in the upper right corner to view a drop-down list.
Select Settings from the drop-down list.
Select the Advanced Deliverability From Email Domains tab.
Add a New From Domain
Select Add to add a new "From" email domain.
Edit an Existing From Domain
Select Edit to update an existing "From" email domain.