PowerShell

Delete a Set of POP3 Messages by UIDL

Demonstrates the Chilkat MailMan.DeleteUidlSet method, which marks the POP3 messages whose UIDLs are listed in a StringTable for deletion. Chilkat processes the UIDL set and sends a DELE command for each located message. This example deletes two messages by UIDL.

Background: When you already know exactly which messages to remove — by their stable UIDLs — DeleteUidlSet deletes them all in one call without first downloading them. It is the efficient counterpart to fetching-then-deleting: for example, after processing messages elsewhere, hand back just their UIDLs to clear them. The deletions are committed when the POP3 session ends (unless ImmediateDelete is set).

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

$success = $false

#  Demonstrates the MailMan.DeleteUidlSet method, which marks the POP3 messages whose UIDLs
#  are listed in a StringTable for deletion.  Chilkat sends DELE for each located message.

$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"

#  Build the set of UIDLs to delete.
$uidls = New-Object Chilkat.StringTable
$uidls.Append("0000000123abcdef")
$uidls.Append("0000000124abcdef")

#  Mark the messages for deletion.

$success = $mailman.DeleteUidlSet($uidls)
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

#  Unless the ImmediateDelete property is set to $true, the messages are only marked for
#  deletion.  End the POP3 session (which sends the QUIT command) to commit the deletions.
$success = $mailman.Pop3EndSession()
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

$("Deleted the UIDL set 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.