Gmail provides a thread ID to associate groups of messages in the same manner as in the Gmail web interface.<\/p>\n
Retrieval of this thread ID is supported via the X-GM-THRID attribute on the FETCH command.<\/p>\n
The thread ID is a 64-bit unsigned integer.<\/p>\n
The X-GM-THRID attribute may also be used in the SEARCH command to find the UIDs of messages in a given thread.<\/p>\n
\r\n\/\/ C# version\r\n\r\nusing (Imap imap = new Imap())\r\n{\r\n imap.ConnectSSL("imap.gmail.com");\r\n imap.UseBestLogin("pat@gmail.com", "password");\r\n\r\n \/\/ Select 'All Mail' folder\r\n CommonFolders common = new CommonFolders(client.GetFolders());\r\n client.Select(common.AllMail);\r\n\r\n long newestMessageUID = imap.GetAll().Last();\r\n var threadId = imap.GetEnvelopeByUID(newestMessageUID).GmailThreadId;\r\n\r\n List<long> uids = imap.Search().Where(\r\n Expression.GmailThreadId(threadId));\r\n\r\n foreach (MessageInfo info in imap.GetMessageInfoByUID(uids))\r\n {\r\n Console.WriteLine("{0} - {1}",\r\n info.Envelope.GmailThreadId,\r\n info.Envelope.Subject);\r\n }\r\n\r\n imap.Close();\r\n}\r\n<\/pre>\n\r\n' VB.NET version\r\n\r\nUsing imap As New Imap()\r\n\timap.ConnectSSL("imap.gmail.com")\r\n\timap.UseBestLogin("pat@gmail.com", "password")\r\n\r\n\t' Select 'All Mail' folder\r\n\tDim common As New CommonFolders(client.GetFolders())\r\n\tclient.Select(common.AllMail)\r\n\r\n\tDim newestMessageUID As Long = imap.GetAll().Last()\r\n\tDim threadId = imap.GetEnvelopeByUID(newestMessageUID).GmailThreadId\r\n\r\n\tDim uids As List(Of Long) = imap.Search().Where( _\r\n\t\tExpression.GmailThreadId(threadId))\r\n\r\n\tFor Each info As MessageInfo In imap.GetMessageInfoByUID(uids)\r\n\t Console.WriteLine("{0} - {1}", _\r\n info.Envelope.GmailThreadId, _\r\n info.Envelope.Subject)\r\n\tNext\r\n\r\n\timap.Close()\r\nEnd Using\r\n<\/pre>\n