VB.NET

Delete a POP3 Message via an Email Object

Demonstrates the Chilkat MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL stored in the X-UIDL header of an Email object. The email must contain an X-UIDL header, which it does after being fetched from the server. This example fetches a message and then deletes it.

Background: When Chilkat downloads a POP3 message it records the server UIDL in an X-UIDL header on the Email object. DeleteEmail uses that header to tell the server which message to remove — a natural "process then delete" flow: fetch a message, act on it, then delete it. As always in POP3, the deletion is only committed when the session ends (unless ImmediateDelete is set).

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Dim success As Boolean = False

'  Demonstrates the MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL
'  stored in the X-UIDL header of an Email object.  The email must contain an X-UIDL header
'  (as it does after being fetched from the server).

Dim mailman As New Chilkat.MailMan

'  Configure the POP3 server connection.
mailman.MailHost = "pop.example.com"
mailman.MailPort = 995
mailman.PopSsl = True
mailman.PopUsername = "user@example.com"
mailman.PopPassword = "myPassword"

'  Fetch a message (headers are enough; the X-UIDL header identifies it on the server).
Dim email As New Chilkat.Email

success = mailman.FetchOne(True,0,1,email)
If (success = False) Then
    Debug.WriteLine(mailman.LastErrorText)
    Exit Sub
End If


'  Delete that message using its X-UIDL header.
success = mailman.DeleteEmail(email)
If (success = False) Then
    Debug.WriteLine(mailman.LastErrorText)
    Exit Sub
End If


'  Unless the ImmediateDelete property is set to True, the message is only marked for
'  deletion.  End the POP3 session (which sends the QUIT command) to commit the deletion.
success = mailman.Pop3EndSession()
If (success = False) Then
    Debug.WriteLine(mailman.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Deleted the email from the POP3 server.")

'  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
'  connects and authenticates -- using the property settings above -- whenever a server
'  operation requires it.  Calling the explicit connect/authenticate methods can still be
'  helpful to determine whether a failure occurs while connecting or while authenticating.