PowerShell

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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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$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.

$mailman = New-Object 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 -eq $false) {
    $($mailman.LastErrorText)
    exit
}

#  Mark a message for deletion...
$success = $mailman.DeleteByMsgnum(1)
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

#  ...but end the session without QUIT, so the deletion is NOT committed and the message
#  remains in the mailbox.
$success = $mailman.Pop3EndSessionNoQuit()
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

$("Session closed without committing the pending deletion.")