From your own pages MS.. "Will I lose any features when I move from an OWA mobile app to Outlook for iOS or Outlook for Android? (yes quite a few important ones is the answer) For the past several years, Microsoft has focused on launching features customers need in Outlook for iOS and Outlook for Android. With an architecture fully powered by the Microsoft cloud, Outlook offers an effortless user experience and bolstered security. Many features, including shared or delegate calendar access and the ability to view the Global Address List, are now included in the Outlook apps. Other features (like shared mailboxes) will be available by the end of 2018. In the meantime, the Outlook web experience is available from your browser on your mobile device." So if the features we need will be coming at the end of 2018 why are you removing OWA at the start of the year... And that's if we get the features at all, Outlook contact manager on Enterprise anyone? 3 years and counting!!!! and we've tested it and it works fine with E3 and trial on bus prem literally nothing stopping you adding it. Ever hear of continuity... This is again total BS from a company that seems to be pedaling backwards in so many areas. Is MS trying to proactively piss off every power user and tech user in the community?