The reset password feature in Mozilla Thunderbird Email allows you to create a new password in case you do not remember your current credentials. You will need to enter a security code or answer a security question to verify your identity before you can reset the password. Regularly resetting your email password will also help to keep your data safe and secure your account. You can call the Mozilla Thunderbird customer service number and consult a trained expert to learn about the exact steps you need to follow to reset the password.