We have deployed Exchange online AKA Office 365, for several customers over this year. At this point I'm just about tired of apologizing to customers about the shortcoming and dysfunctions of this web interface and screwed up email formatting, not to mention the frequent outages. And don't tell me to use it with Outlook, that POS has been mentioned in previous list for a good reason as it tends to break and cost customer even more money to have it fixed. The sad thing is so many of them are so dependent on this trash email client they are not willing to try anything else. My Google email is so much more capable than the Microsoft competition that it makes me wonder what keep Microsoft two generations behind. Gmail had its own outage today which was very disappointing but they still have a long way to catch up to Microsoft record of outages.