Xojo Plugin

End a POP3 Session Without Committing Deletions

Demonstrates the Chilkat MailMan.Pop3EndSessionNoQuit method, which closes the POP3 connection without sending the QUIT command. Pending deletion marks are not committed — messages marked with DELE during the session remain in the mailbox. This example marks a message for deletion and then abandons the session so the deletion does not take effect.

Background: POP3's deferred-deletion model effectively gives you a transaction: marks made with DELE are only applied when the session ends with QUIT. Ending without QUIT is therefore a rollback — useful if an error occurs mid-processing and you'd rather leave the mailbox untouched than risk deleting messages you failed to handle. Use Pop3EndSession when you do want the deletions committed.

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Xojo Plugin

Dim success As Boolean
success = False

//  Demonstrates the MailMan.Pop3EndSessionNoQuit method, which closes the POP3 connection
//  WITHOUT sending the QUIT command.  Pending deletion marks are not committed -- messages
//  marked with DELE during the session remain in the mailbox.

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"

success = mailman.Pop3BeginSession()
If (success = False) Then
    System.DebugLog(mailman.LastErrorText)
    Return
End If

//  Mark a message for deletion...
success = mailman.DeleteByMsgnum(1)
If (success = False) Then
    System.DebugLog(mailman.LastErrorText)
    Return
End If

//  ...but end the session without QUIT, so the deletion is NOT committed and the message
//  remains in the mailbox.
success = mailman.Pop3EndSessionNoQuit()
If (success = False) Then
    System.DebugLog(mailman.LastErrorText)
    Return
End If

System.DebugLog("Session closed without committing the pending deletion.")