I am also looking for a solution for this. I am trying to find a way to have
Outlook send email alerts. I have found third party solutions through the
Office Marketplace.
http://www.salesoutlook.com/ and
http://www.rsoutlook.com/us/prods/prod01.html are examples.

What I need though is a way to specify a different email address for each of
the reminders. So far I haven't been able to confirm this capability for any
of the plug-ins.