Read mail in Office 365 showing as unread on Iphone and Ipad
I use Office 365 E1 for mail hosting and have for 2 years. Recently my mail has been acting up on my IPhone and IPad. When I read an email on my Macbook and delete it (or delete an unread email) it is still showing up as unread on my IPad and IPhone. This issue started on Thursday of last week and as I said I have been using the same mail hosting service for 2 years. We have deleted the profile on Microsoft and recreated but it has not resolved the issue. This is leading me to believe this is a Mac issue rather than a Microsoft. Any help is greatly appreciated.
iPhone 4S, iOS 6.1.4