Thunderbird IMAP Configuration
Make sure that IMAP is enabled in your AUA Google Web Mail settings.
Launch Thunderbird and select Don’t Import Anything and click Next. In the Mail Account Setup window, enter your full name and email address. Leave the password field blank. Click Continue. Click the Stop button in the Looking up configuration part of the next window. Click Manual Setup. An Account Settings window will appear. Proceed with configuration according to below screenshots
Thunderbird POP Configuration
Make sure to first change your Google email settings to enable POP by logging into your AUA gmail account and follow these Instructions.
Proceed with configuration according to below screenshots .