Get the IMAP UID of an Email

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Demonstrates the Chilkat Email.GetImapUid method. When email headers are downloaded from an IMAP server using Chilkat IMAP, a ckx-imap-uid header field is added to the email, and GetImapUid returns its value. This example sets that header directly to illustrate how the method reads it.

Background: IMAP assigns each message in a mailbox a UID — a stable numeric identifier used to fetch, flag, move, or delete that specific message. Chilkat records it in the ckx-imap-uid header so it stays attached to the downloaded Email object. This is the IMAP counterpart to POP3's UIDL (see the Uidl property), letting an application correlate a local message back to its position on the server.

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//  Demonstrates the GetImapUid method.  When an email is downloaded from an IMAP server
//  (using Chilkat IMAP), a ckx-imap-uid header field is added, and GetImapUid returns its
//  value.  Here we set the header directly to show how the method reads it.

Chilkat.Email email = new Chilkat.Email();
email.Subject = "GetImapUid example";

//  Normally the IMAP download sets this header; we set it here for demonstration.
email.AddHeaderField("ckx-imap-uid","482");

Debug.WriteLine("IMAP UID = " + Convert.ToString(email.GetImapUid()));