I've added my personal email account as a imap account in the email app on WP8.1 and I've done the same on Outlook 2013 on the desktop. But read receipts doesn't sync. If I read a email on my desktop it appears as unread on my phone and the other way around. But if I read the same email on another computer in Outlook or on a Android tablet it shows up as read on my desktop.
Is this a bug in WP?
Is this a bug in WP?