B4X

Delete a Bundle of POP3 Messages

Demonstrates the Chilkat MailMan.DeleteBundle method, which deletes POP3 messages using the UIDLs stored in the X-UIDL headers of the Email objects in an EmailBundle. An email without an X-UIDL header is skipped. This example fetches all messages and deletes them.

Background: DeleteBundle is the batch version of DeleteEmail: it marks every message in a downloaded bundle for deletion in one call. A typical "download and clear the mailbox" workflow is to fetch all messages, process them, then delete the whole bundle. Because a bundle can be filtered or built selectively, you can also delete just the subset you no longer need. The deletions commit when the POP3 session ends.

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B4X

Dim success As Boolean = False

'  Demonstrates the MailMan.DeleteBundle method, which deletes POP3 messages using the UIDLs
'  stored in the X-UIDL headers of the Email objects in an EmailBundle.  An email without an
'  X-UIDL header is skipped.

Dim mailman As ChilkatMailMan
mailman.Initialize("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"

'  Fetch all messages (headers are enough; each carries an X-UIDL header).
Dim bundle As ChilkatEmailBundle
bundle.Initialize

success = mailman.FetchAll(True, True, 0, bundle)
If success = False Then
    Log(mailman.LastErrorText)
    Return
End If


'  Delete every message in the bundle.
success = mailman.DeleteBundle(bundle)
If success = False Then
    Log(mailman.LastErrorText)
    Return
End If


'  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 = False Then
    Log(mailman.LastErrorText)
    Return
End If


Log("Deleted " & bundle.MessageCount & " messages 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.