What is the format of compose links to web mail clients such as Gmail, Yahoo Mail, Hotmail and AOL?

Question

In my application, I\'m currently using mailto: links to open email compose dialogs. This is terrible for web mail users, since it typically causes Outlook or Apple Mail to

Answer 1

Some searching led to this as the proper format for AOL Mail links:
http://webmail.aol.com/Mail/ComposeMessage.aspx?to=TO&subject=SUBJECT&body=BODY&cc=CC&bcc=BCC

Source: http://dev.aol.com/api/openmail/webmail (under 'External Invocation of Web Mail'), and some Google searching to find the parameters.

Once you have these 4 covered, I think you've got essentially all of the webmail clients covered.