1. First click “settings”. Screen Shot 2015-12-16 at 9.14.21 PM   2. Then click “Accounts and Import” followed by “Add another email address you own”. Screen Shot 2015-12-16 at 9.18.56 PM   3. Follow the instructions to add your name and email address. Treat as an alias should be checked. 4. Here’s where it gets tricky. SMTP Server should be smtp.gmail.com, username is your gmail address, but password is different. 5. Follow this link to create an App Password: https://security.google.com/settings/security/apppasswords, log in to your gmail address. 6. Click “Select App”, then “Other”. Screen Shot 2015-12-16 at 9.32.29 PM   7. Call it Gmail, or whatever you want. 8. Copy the password, and paste it onto the screen from before: Screen Shot 2015-12-16 at 9.35.33 PM   9. Click “Add Account”, and you should be good.