Why can't I send HTML to or receive HTML from the AOL Internet?

"Starting with AOL 6.0 for Windows and AOL 5.1 for Mac OS X, the AOL client can receive complex HTML from the Internet. Prior to that, formatting in HTML was limited to a small number of HTML tags embedded in a plain text message. AOL Mail via the web also views HTML mail. AOL 6.0 for Windows and AOL 10.2.1 for Mac OS X and later can also send HTML to the Internet. More information about sending HTML mail to AOL can be found at Webmaster.Info: HTML Email. A related question is often why AOL doesn't automatically make URLs in the bodies of email messages clickable. This is simply the nature of AOL's client software. Anything can be made clickable if it is written in HTML (even in a plain text email). "