Set Up Thunderbird
Open Mozilla Thunderbird. If you have never set up an account Thunderbird, the Mail Account Setup Wizard will appear. If it does, enter your name as you want to appear to people who receive your email messages in Your Name box, enter your Gmail email address including email@example.com extension into the Email Address box and type your Gmail password into the Password box. Click Continue.
Thunderbird will attempt to configure your account automatically. If it is successful, click the Create Account button. You can begin to access your Gmail account from within Thunderbird immediately.
If the automatic configuration is unsuccessful, or the Mail Account Setup Wizard does not appear, you can take additional steps to configure Thunderbird automatically.
Open Mozilla Thunderbird. Go to the Tools menu and select Account Settings to open the Account Settings dialog box. Click on the Account Actions button at the bottom left side of the dialog box. Choose Add Mail Account. This opens the Mail Account Setup Wizard. You can follow the same steps as listed above.
If the automatic setup is unsuccessful, click on the Manual Setup button. Enter imap.gmail.com into the Incoming box. Select IMAP, 993 and SSL/TLS. In the Outgoing section, enter smtp.googlemail.com, 465 and SSL/TLS.
Click the Re-test Configuration button. The wizard will notify you that the configuration was successful. Click on the Create Account button to begin receiving, sending and managing your Gmail messages in Thunderbird.