Exchange ActiveSync - get unseen emails count

Question

I am writing Exchange ActiveSync client in C++. I use FolderSync command for synchronize list of folders and Sync command for synchronize emails from server.

In IMAP protocol I use command STATUS INBOX (UNSEEN) for getting unseen emails in inbox folder.

Is in Exchange ActiveSync some equivalent command ?

Answer 1

According to the Microsoft documentation only the following is part from ActiveSync:

Support for HTML messages
Support for follow-up flags
Conversation grouping of email messages
Ability to synchronize or not synchronize an entire conversation
Synchronization of Short Message Service (SMS) messages with a user's Exchange mailbox
Support for viewing message reply status
Support for fast message retrieval
Meeting attendee information
Enhanced Exchange Search
PIN reset
Enhanced device security through password policies
Autodiscover for over-the-air provisioning
Support for setting automatic replies when users are away, on vacation, or out of the office
Support for task synchronization
Direct Push
Support for availability information for contacts

But you might wish to implement something via EWS (see here some example).