Hi McFestoe,
I write Access apps for work and others and that is where most my knowledge for Access comes from, but I love my iPaq.
Anyway, if I understand your need, you want to collect a name, address, e-mail address and such on your PPC, then get back home and sync up, start your Access db and be able to send them an e-mail? I see no reason why this can't be done. I have not tried specifically what you are wanting to do, but it should work (at least in my mind it would work). SPrintDB Pro just released an update with some fixes and new features.