//Below is the sample source code to connect and list messages from Inbox folder of Microsoft Exchange Server using IMAP protocol. //[C#] // Connect to Exchange Server using ImapClient class ImapClient imapClient = new ImapClient("ex07sp1", "Administrator", "Evaluation1"); imapClient.Connect(true); // Select the Inbox folder imapClient.SelectFolder(ImapFolderInfo.InBox); // Get the list of messages ImapMessageInfoCollection msgCollection = imapClient.ListMessages(); foreach (ImapMessageInfo msgInfo in msgCollection) { Console.WriteLine(msgInfo.Subject); } // Disconnect from the server imapClient.Disconnect(); //[VB.NET] ' Connect to Exchange Server using ImapClient class Dim imapClient As ImapClient = New ImapClient("ex07sp1", "Administrator", "Evaluation1") imapClient.Connect(True) ' Select the Inbox folder imapClient.SelectFolder(ImapFolderInfo.InBox) ' Get the list of messages Dim msgCollection As ImapMessageInfoCollection = imapClient.ListMessages() For Each msgInfo As ImapMessageInfo In msgCollection Console.WriteLine(msgInfo.Subject) Next msgInfo ' Disconnect from the server imapClient.Disconnect() //Programming Samples for SSL //If the Exchange Server uses SSL, modify the above code as follows: //[C#] private void ConnectUsingSSL() { // Connect to Exchange Server using ImapClient class ImapClient imapClient = new ImapClient("ex07sp1", 993, "Administrator", "Evaluation1", new RemoteCertificateValidationCallback(RemoteCertificateValidationHandler)); imapClient.EnableSsl = true; imapClient.SecurityMode = ImapSslSecurityMode.Implicit; imapClient.Connect(true); lstLog.Items.Add("Connected to Exchange server"); // Select the Inbox folder imapClient.SelectFolder(ImapFolderInfo.InBox); // Get the list of messages ImapMessageInfoCollection msgCollection = imapClient.ListMessages(); foreach (ImapMessageInfo msgInfo in msgCollection) { Console.WriteLine(msgInfo.Subject); } // Disconnect from the server imapClient.Disconnect(); } // Certificate verification handler private bool RemoteCertificateValidationHandler(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; //ignore the checks and go ahead } //[VB.NET] ' Connect to Exchange Server using ImapClient class Dim imapClient As ImapClient = New ImapClient("ex07sp1", 993, "Administrator", "Evaluation1", New RemoteCertificateValidationCallback(AddressOf RemoteCertificateValidationHandler)) imapClient.EnableSsl = True imapClient.SecurityMode = ImapSslSecurityMode.Implicit imapClient.Connect(True) Console.WriteLine("Connected to Exchange server") ' Select the Inbox folder imapClient.SelectFolder(ImapFolderInfo.InBox) ' Get the list of messages Dim msgCollection As ImapMessageInfoCollection = imapClient.ListMessages() For Each msgInfo As ImapMessageInfo In msgCollection Console.WriteLine(msgInfo.Subject) Next msgInfo ' Disconnect from the server imapClient.Disconnect() ' Certificate verification handler Private Function RemoteCertificateValidationHandler(ByVal sender As Object, ByVal certificate As X509Certificate, ByVal chain As X509Chain, ByVal sslPolicyErrors As Net.Security.SslPolicyErrors) As Boolean Return True 'ignore the checks and go ahead End Function //Programming Sample - Saving One Message Only //After connecting to an Exchange server using IMAP and getting the IMapMessageInfoCollection, you can use the MessageInfo object's sequence number to save a specific message as follow: [C#] // Get the list of messages ImapMessageInfoCollection msgCollection = imapClient.ListMessages(); foreach (ImapMessageInfo msgInfo in msgCollection) { //Fetch the message from inbox using its SequenceNumber from msgInfo MailMessage msg = imapClient.FetchMessage(msgInfo.SequenceNumber); //Save the message to disc now msg.Save(msgInfo.SequenceNumber + ".msg", MailMessageSaveType.OutlookMessageFormat); }