Gmail is one of the largest email service providers in the world. It has many options such as spam control, unlimited storage space, chat, labs etc. You also sync your Gmail account with Thunderbird and manage your message in one place. Simply configure your email address in Thunderbird and begin managing email in it. It is noteworthy that any changes made your Gmail account are immediately reflected in Thunderbird.
Follow this step by step tutorial to learn How to use Gmail with Thunderbird.