In the Home section, click on the menu icon and  then select the Account Settings option.

Then, click on Account Settings and Add Mail Account.

Fill in the fields:

• Your full name: your first and last name
• Email: Your EBOX email adress
• Password: The password defined for your mailbox

Click on Continue.

Thunderbird will attempt to determine the server settings automatically and will fail. Click on Configure Manually.

Then enter the required information:

• Incoming server: imap.ebox.ca port 143, if IMAP server, pop.ebox.ca port 110, if
  POP3 server.
• Outgoing server: smtp.ebox.ca port 25
• SSL: none, for incoming and outgoing
• Authentication: Auto Detection
• Username: Your client code, in lowercase.

Click on Finish.

A warning message explaining that the servers are not using encryption will appear. Tick I understand the risks then click on Finish.

Congratulations, the configuration is finished!