It wasn't Gmail that started XHR though. Gmail wasn't even first online email service to use XHR. The first app to use XHR, which is also the first email servic

It wasn't Gmail that started XHR though. Gmail wasn't even first online email service to use XHR. The first app to use XHR, which is also the first email service to use XHR was Outlook Web Access. It's funny that Microsoft were the who were innovating with better features and a more coherent vision during the late browser wars, but they failed to capitalize on this innovation once they won the war and they could now just release IE6 with a shiny Media Bar and then fail to update it for 5 years. Nothing would ever go wrong, and no competitor could threat Microsoft, since all these toolbars everybody seem to adore are only compatible with Internet Explorer anyway. Yeah...