Step 1
email-opions
a)Click Options at the top right hand corner of the screen
Step 2
edit-name
a) Click 'Account' on the left
b) Click 'Edit', then a pop-up window should appear
Step 3
change-and-save-name
a) Edit the 'Display Name' field to your prefered display name
b) Click 'Save' to save the change
Step 4
return to mailbox
a)Click 'My Mail' link at the top right hand corner to return to your mailbox.