AOL Mail (sometimes referred to as AIM Mail) is a web-based email (webmail) service provided by AOL. Its main competitors are Gmail, Windows Live Hotmail and Yahoo! Mail. The "AIM" in the name stands for AOL Instant Messenger, AOL's instant messaging program.
AOL Mail is free and also features an option for creating an email address for a custom domain.
Source: www.aol.com Mail Login