1. Enable POP in your MaineStream.us account. Don't forget to click Save Changes when you're done.
2. Open Apple Mail.
3. Click the Mail menu and select Preferences...
4. Open the Accounts tab, and click the plus sign (+) along the bottom to add a new account.

5. Enter your name in the Full Name: field.
6. Enter your MaineStream.us email address in the Email Address: field.
7. Enter your password in the Password: field.
8. Click the Continue button.

9. Make sure Account Type: is POP.
10. Enter "MaineStream" as the Description.
11. Enter "pop.gmail.com" in the Incoming Mail Server: field.
12. Enter your MaineStream.us email address in the User Name: field.
13. Your password should already be filled in. If not, type it in the Password: field.
14. Click the Continue button.

15. Enter "MaineStream" as the Description.
16. Enter "smtp.gmail.com" in the Outgoing Mail Server: field.
17. Make sure that Use Authentication is checked.
18. Enter your MaineStream.us email address in the User Name: field.
19. Enter your password in the Password: field.
20. Click the Continue button.
21. Apple Mail will verify your settings at this point and give you a summary of what was set up. Click the Create button to complete the setup of your mail.

You should be good to go now!