Delphi ActiveX

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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var
success: Integer;
mailman: TChilkatMailMan;
bundle: TChilkatEmailBundle;

begin
success := 0;

//  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.

mailman := TChilkatMailMan.Create(Self);

//  Configure the POP3 server connection.
mailman.MailHost := 'pop.example.com';
mailman.MailPort := 995;
mailman.PopSsl := 1;
mailman.PopUsername := 'user@example.com';
mailman.PopPassword := 'myPassword';

//  Fetch all messages (headers are enough; each carries an X-UIDL header).
bundle := TChilkatEmailBundle.Create(Self);

success := mailman.FetchAll(1,1,0,bundle.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

//  Delete every message in the bundle.
success := mailman.DeleteBundle(bundle.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

//  Unless the ImmediateDelete property is set to 1, 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 = 0) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Deleted ' + IntToStr(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.