For over a year, still massively disappointing and frustrating to use. Search does not work well and is unreliable. Outlook does not allow advanced account server settings to be edited. Does not allow you to see date/time of email delivery and sender email address in list of emails without having to select. Poor user interface design. Can't save attachments. Can't reply-all to a large group of people in an older threaded conversation. Snooze options are useless; need to match Outlook PC.