An Outlook.com PWA could not replace the Windows Mail app

<p>They could very easily do it. They allow you to redirect email over Outlook.com already (and I use it for one account).</p><p>But you are back to the old data collection argument. If I collect the email on my local machine, Microsoft can't see it, if Microsoft collects it for me and stores it on their servers, they theoretically have full access to it.</p><p>If you don't use Outlook.com and want you business mail collected, your employer would probably have a fit about it going first to Microsoft – it would certainly blow their compliance audits out of the water; this would be different to Office 365 hosted mail, which is partitioned into a separate client space for each customer.</p><p>This was a problem with the early versions of Acompli (Outlook for Andoid and iOS), before Microsoft bought it and re-worked it. They stored your username and password on their servers and pulled the information from your mail servers onto theirs, before pushing it down to the client. That made what was otherwise the perfect corporate email tool unusable by corporate users. They have changed it in the meantime and it now pushes or pulls directly from your mail provider to you.</p><p>I accepted this for my Outlook.com account and used Outlook for Android from the getgo, but only switched to using it with my business email when they changed how it worked.</p>