Search Gmail message id
Gmail provides a unique message ID for each email so that a unique message may be identified across multiple folders.
Retrieval of this message ID is supported via the X-GM-MSGID attribute on the FETCH command.
The message ID is a 64-bit unsigned integer.
The X-GM-MSGID attribute may also be used in the SEARCH command to find the UID of a message given Gmail’s message ID.
// C# version using (Imap imap = new Imap()) { imap.ConnectSSL("imap.gmail.com"); imap.UseBestLogin("pat@gmail.com", "password"); // Select 'All Mail' folder CommonFolders common = new CommonFolders(client.GetFolders()); client.Select(common.AllMail); long newestMessageUID = imap.GetAll().Last(); var messageId = imap.GetEnvelopeByUID(newestMessageUID).GmailMessageId; List<long> uids = imap.Search().Where( Expression.GmailMessageId(messageId)); MessageInfo info = imap.GetMessageInfoByUID(uids.First()); Console.WriteLine("{0} - {1}", info.Envelope.GmailMessageId, info.Envelope.Subject); imap.Close(); }
' VB.NET version Using imap As New Imap() imap.ConnectSSL("imap.gmail.com") imap.UseBestLogin("pat@gmail.com", "password") ' Select 'All Mail' folder Dim common As New CommonFolders(client.GetFolders()) client.Select(common.AllMail) Dim newestMessageUID As Long = imap.GetAll().Last() Dim messageId = imap.GetEnvelopeByUID(newestMessageUID).GmailMessageId Dim uids As List(Of Long) = imap.Search().Where( _ Expression.GmailMessageId(messageId)) Dim info As MessageInfo = imap.GetMessageInfoByUID(uids.First()) Console.WriteLine("{0} - {1}", _ info.Envelope.GmailMessageId, _ info.Envelope.Subject) imap.Close() End Using
You can learn more about this Gmail IMAP extension here:
http://code.google.com/apis/gmail/imap/#x-gm-msgid
August 30th, 2015 at 09:22
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