title: Yahoo! Mail
context: Yahoo! Mail is an email service launched in 1997 through the American parent company Yahoo!. Yahoo Mail provides four different email plans: three for personal use (Basic, Plus, and Ad Free) and another for businesses.[5][6] By December 2011, Yahoo! Mail had 281 million users, making it the third largest web-based email service in the world.[7] Since 2015 its webmail client also supports managing non-Yahoo e-mail accounts.[8]
question: When was Yahoo mail launched?
answers: 1997