public static void Run() { // ExStart:RetrieveMessageSummaryInformationUsingUniqueId string uniqueId = "unique id of a message from server"; Pop3Client client = new Pop3Client("host.domain.com", 456, "username", "password"); client.SecurityOptions = SecurityOptions.Auto; Pop3MessageInfo messageInfo = client.GetMessageInfo(uniqueId); if (messageInfo != null) { Console.WriteLine(messageInfo.Subject); Console.WriteLine(messageInfo.Date); } // ExEnd:RetrieveMessageSummaryInformationUsingUniqueId }