QuickBase is not designed to be a mass mailing engine and cannot easily be configured to fire off nicely formatted customized emails to a mailing list. Also it cannot natively deliver an attachment by email. If you really want this I suggest that you contact a 3rd Party add on Provider such as juiced and they can probably get something to work for you. Juiced would be listed in the Developer partner listings. http://quickbase.intuit.com/partner
But you would probably just be better served in extracting an email list from QuickBase and feeding that into a email tool like Mail Chimp or Constant Contact.