You to gmail.com with your browser and login to your email. Once your logged in you can change your settings via the button in the top right.I'm not sure I understand what you mean by "in the top right". Top right of what window?
When I'm in "mail", I don't have that option.
After you log in to gmail, click the gear icon then click settings. Now, from there I'm not sure which tab will address your issue. I suspect "accounts and import" then "sent mail as".I'm still having trouble finding the button you are talking about...
it worked...thankyouon your mac, when u send an email to yourself, let its say (Holidays in united states). hover your mouse over that blue bubble containing that text until you see the drop down menu. choose "Remove from previous recipients list" should be gone!!