Check if each email in inbox is replied to or not - asp.net c#

Question

I want to check if each of the emails in my inbox is replied to or not. If yes, then what is the replied date.

For eg: loop through each email in my inbox and check a property, say,

if (oMailItem.IsReplied==true ){        
    strSentOnDate=oMailItem.SentOn 
} //replied to date

How to do this in asp.net c# . Am using MS Outlook

Answer 1

Use EWS Conversations:

https://msdn.microsoft.com/en-us/library/office/dn610351(v=exchg.150).aspx

Then cycle through the items in the conversation looking for the InReplyTo field equal to your original message ID.