AOL Mail (stylized as Aol Mail.) is a free web-based email service provided by AOL, a division of Yahoo! Inc. AOL Mail has the following features available: Email attachment limit: 25 MB Max mailbox size: Unlimited New accounts seem to be limited to 1 TB. Supported protocols: POP3, SMTP, IMAP Link to other email accounts from other service providers (such as Gmail and Hotmail). Ads: are displayed while working with the email account. Embedded links within emails are automatically disabled and can only be activated by the email user. Spam protection Virus protection Spell checking Domains: @aol.com and previously @love.com, @ygm.com (short for you've got mail), @games.com, and @wow.com Supports TLS/HTTPS after login If an AOL Mail account is inactive for 90 days, it may become deactivated, at which point any emails sent to it may not be delivered and may be returned to sender. After 180 days of inactivity, the account may be deleted. In 1993, both America Online (AOL) and Delphi started connecting their proprietary e-mail services to the Internet. As of October 1997, AOL Mail was the world's largest e-mail provider, with around 9 million subscribers (identical with the number of AOL subscribers). In 1997, AOL launched NetMail, a web-based version of its e-mail service. It was initially criticized for only working on Internet Explorer, but a later Java-written version ensured compatibility with Netscape Navigator. The service was renamed AOL Mail on the Web in December 1999. In January 2001, an e-mail alert service for text-based digital cellphones and pagers was launched. In 2004, AOL tested a new free webmail service for the public, without the need of customers subscribing to AOL. This was done in an effort to compete better against MSN Hotmail, Yahoo! Mail and Gmail. The service launched in May 2005 under the name AIM Mail, with 2 gigabytes of mail storage and tightly integrated with AOL Instant Messenger (AIM). It is based on technology from MailBlocks, which AOL acquired in 2004.