dkim@accentasia wrote:

How do I disable mail polling? That sounds like the best, most
flexible option.

Depends on your version of Outlook (not identified) regarding
navigation through its menus. For Outlook 2002:

Tools - Send/Receive Settings - Define Send/Receive Groups

If you don't want to use Outlook at all, change which e-mail client is
configured to be the default one:

Internet Options (Control Panel or IE Tools menu) - Programs - E-mail