Tcl

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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Tcl


load ./chilkat.dll

set success 0

#  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.

set mailman [new_CkMailMan]

#  Configure the POP3 server connection.
CkMailMan_put_MailHost $mailman "pop.example.com"
CkMailMan_put_MailPort $mailman 995
CkMailMan_put_PopSsl $mailman 1
CkMailMan_put_PopUsername $mailman "user@example.com"
CkMailMan_put_PopPassword $mailman "myPassword"

set success [CkMailMan_Pop3BeginSession $mailman]
if {$success == 0} then {
    puts [CkMailMan_lastErrorText $mailman]
    delete_CkMailMan $mailman
    exit
}

#  Mark a message for deletion...
set success [CkMailMan_DeleteByMsgnum $mailman 1]
if {$success == 0} then {
    puts [CkMailMan_lastErrorText $mailman]
    delete_CkMailMan $mailman
    exit
}

#  ...but end the session without QUIT, so the deletion is NOT committed and the message
#  remains in the mailbox.
set success [CkMailMan_Pop3EndSessionNoQuit $mailman]
if {$success == 0} then {
    puts [CkMailMan_lastErrorText $mailman]
    delete_CkMailMan $mailman
    exit
}

puts "Session closed without committing the pending deletion."

delete_CkMailMan $mailman