1. Go to https://www.mozilla.org/en-US/thunderbird and click the "Thunderbird Free Download" button
2. After it's finished downloading open up the installer click next and we can get started
3. Click “next”
4. Click “install”
5. Click “Finish”
6. Enter all of your information. Full name, complete email address, your correct password then click "Continue" and wait for it to load. It will say it failed because we aren't finished. We'll have to make some small changes.
7. Click the radio button next to "POP3 (keep mail on your computer)". Then click the "Manual config" button
8. Make sure the Incoming dropdown has "POP3" selected.
9. Change the INCOMING server hostname to mail.yourdomain.com (please don't take this as literally yourdomain.com) and Port "110". Change the SSL to "None" and the Authentication to "Normal Password"
10. Change the OUTGOING Server hostname to mail.yourdomain.com (please don't take this as literally yourdomain.com) and Port "2525". Change the SSL to "STARTTLS" and the Authentication to "Encrypted password"
11. Change the Incoming Username to your email address (the Outgoing Username should change along with it).
12. Check “I understand the risks”
13. Click “Done” and that's it!