Hi,

Is there any way to reply a mail using UniqueID of the EmailMessage?

Suppose I have

EmailMessage email = lib.GetMostRecentEmail("Inbox", "test@ctc.com");

String message_ID = email.Id.UniqueId.ToString();

I am storing message_ID in table as Primary Key and

In future If I want to reply a mail which is having message_ID as unique ID, is there any way to implement this scenario?

In the Managed API you would just Bind to the Message using the Bind method https://msdn.microsoft.com/en-us/library/office/microsoft.exchange.webservices.data.emailmessage.bind(v=exchg.80).aspx and the Id you stored and then call the reply method https://msdn.microsoft.com/en-us/library/office/microsoft.exchange.webservices.data.emailmessage.reply(v=exchg.80).aspx

Cheers
Glen