1. Click on the Display Thunderbird menu icon
  2. On the menu that loads go to Preferences and select Accounts Settings
  3. From the Account Actions drop down menu select Add Mail Account
  4. Now type in Your NameEmail address and Password and press Continue (press manual-config if it takes a while)
  5. Make sure for incoming server IMAP is selected
  6. For incoming and outgoing Server hostname use mail.eoni.com
  7. For SSL, select STARTTLS for both incoming and outgoing
  8. Verify that the incoming port is 993
  9. Verify that the outgoing port is 587
  10. For Username Use your full email address
  11. Click on Re-test, if it works click on Done otherwise review your settings