Visual FoxPro

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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Visual FoxPro

LOCAL lnSuccess
LOCAL loMailman

lnSuccess = 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.

loMailman = CreateObject('Chilkat.MailMan')

*  Configure the POP3 server connection.
loMailman.MailHost = "pop.example.com"
loMailman.MailPort = 995
loMailman.PopSsl = 1
loMailman.PopUsername = "user@example.com"
loMailman.PopPassword = "myPassword"

lnSuccess = loMailman.Pop3BeginSession()
IF (lnSuccess = 0) THEN
    ? loMailman.LastErrorText
    RELEASE loMailman
    CANCEL
ENDIF

*  Mark a message for deletion...
lnSuccess = loMailman.DeleteByMsgnum(1)
IF (lnSuccess = 0) THEN
    ? loMailman.LastErrorText
    RELEASE loMailman
    CANCEL
ENDIF

*  ...but end the session without QUIT, so the deletion is NOT committed and the message
*  remains in the mailbox.
lnSuccess = loMailman.Pop3EndSessionNoQuit()
IF (lnSuccess = 0) THEN
    ? loMailman.LastErrorText
    RELEASE loMailman
    CANCEL
ENDIF

? "Session closed without committing the pending deletion."

RELEASE loMailman