This article will assist you with setting up a fresh install or new profile of Thunderbird.
- Open Thunderbird.
- When Thunderbird opens, you will see the Set Up Your Existing Email Address window pop up.
- In the Set Up Your Existing Email Address window, input the following information before hitting Configure manually
 Your name: your name
 Email Address: yourmailbox@thexyz.com
 Password: Your mailbox password
  
- After hitting Configure manually enter these fields before selecting Done:
 Username: yourmailbox@thexyz.com
 Protocol: IMAP
 Incoming Server: secure.emailsrvr.com
 Incoming Port: 993
 Outgoing Server: secure.emailsrvr.com
 Outgoing Port: 465 or 587
 Authentication: Normal Password
 

- Congratulations! You have now set up Thunderbird to work with your Mailbox. Please wait 15 minutes before troubleshooting to allow for mail to download.