SQLMAIL for MYSQL ?

Hi,

I have a large db app for handling orders etc.
I would like to offer our customers the ability to track their orders
via email.

i.e. they submit an email to track@xxx.co.uk
Subject line = TRACK
BODY = ORDER NUMBER (1 per line)

As the system receives the email, it processes some SQL and returns an
email with their order information.

How can this be achieved ? I am using ASP & MYSQL

Thanks

David