Moreover, since we all have also smartphones connected via EAS, we can also see the emails there being as unread. In WebMail, ~ 70% of emails marked as read in Outlook 2016 are still unread.
Marking emails as read - most of the times they stay read in Outlook 2016, but the read status is not synced back to SM. Marking emails as read - sometimes they go back to being unread after 1 sec or so The issues we are seeing with the latest SM 14 + Outlook 2016 synced via EAS: I`m seeing the same issue with Outlook 2016, plus some.