This is the ONLY reason why I do not purchase an iPhone, and an absolute showstopper as far as I am concerned in terms of the viability of an iPhone for business as well as personal use. Wake up Apple, the world is standardized on Outlook, and I should be able to view, accept, decline, etc. an Outlook Calendar invitation on an iPhone just like I would on any Windows Mobile device or the like. This is so simple and obvious, I am just shocked as to why Apple would not provide for this functionality. I've read through years of messages on this topic, plenty of outstanding requests for this, my only conclusion is that Apple just doesn't want to do it. So for now, I'll leave the iPhone to the teenyboppers and soccer moms, and continue using a substandard Windows Mobile device that I can see my Outlook Calendar invites on. Pathetic.