For the older versions of Exchange, OWA is actually pretty terrific in IE, a completely different UI -- they invented XHR to implement it! In the IE version, yo

For the older versions of Exchange, OWA is actually pretty terrific in IE, a completely different UI -- they invented XHR to implement it! In the IE version, you can purge your inbox in a couple clicks. In the last release or two (which not that many organizations use yet), they've unified it so that there's only one OWA that uses the now standard XHR support in all modern browsers on all platforms.