Use manual setup to add a POP or IMAP email account in Thunderbird for Windows. You can use these instructions to add a POP or IMAP account to Thunderbird.
Step 1: Open the Thunderbird application and open the Account Settings: In the Thunderbird menu bar, click the menu and select , or click the Application menu button 
and select and from the sub-menu.
Step 2: At the bottom of the left pane, click the Account Actions button and select Add Mail Account.
Step 3: Enter your email account details and press Continue. Thunderbird will try to determine your account settings based on the domain portion of your email address (that is, the portion after the "@" symbol).
Step 4: Press Manual Configuration and edit the server names, ports, and IMAP/POP to manually set up the account. See the POP and IMAP account settings. Click Re-test to test your manual settings; there should be a quick response indicating the settings are valid. If not, press the Stop button to abort the lookup, then edit the server names, ports, and IMAP/POP and click Re-test again.
Step 5: Save.
