Can a rule be created in Outlook 2000 or 2003 and/or Exchange 2000 or 2003 to allow an e-mail to be sent to an external address automatically via a user-defined schedule?

My company would like to be able to send a single e-mail to multiple external e-mail addresses based on a schedule that we define. An example would be to automatically send an e-mail to jane@domain.com and joe@domain.com at 7:00am every Wednesday. This would be done without user intervention after the rule is set up. Is this possible with Outlook and/or Exchange rules?

We currently run Exchange 2000 and Outlook 2000 but we'll be migrating to Exchange 2003 this year and we could purchase a license of Outlook 2003 if needed in order to make this work. I know that Outlook 2003 has more rules than 2000 but I don't see any that would fit this need. If it matters, we're running virtually all Windows XP desktops.

I found 3rd party software that appears to be an option (such as www.mapilab.com), but we'd like to stay with our current software if possible.

So I'd like to know if this is possible, and if not, any recommendations on third-party software.

Thanks in advnace,
Jeff