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1. Open Settings from the gear menu. Choose the Accounts tab.
2. Click Add another email address you own. Enter a descriptive official name for the account and the email address. Keep Treat as an alias checked.
3. You will be asked to send a verification email. Click Send Verification.
4. The verification email will be sent to the list. Check your inbox for the email containing the confirmation code.
5. Enter the confirmation code on the confirmation window.
6. That is it! Now when you compose an email, you will have the option to change the "From" address to the alternate email address.
