This is pretty slick: a complete command line solution for managing your Gmail.

Hit the link to explore all the possibilities. From the website:

Do you have a Gmail account? Then, you’ll want to read this step by step tutorial for configuring and installing the latest version of Postfix with SASL authentication and TLS encryption necessary for connecting and relaying Gmail to smtp.gmail.com. Plus, I’ll walk you through configuring fetchmail (with STARTTLS), which will grab (fetch) Gmail to your local system. But it does not stop there. You’ll learn how to forward mail to other computers you have in the house, plus how to automatically backup copies of email.