Put together a form letter, then, depending on the volume of requests,
either use the form or use an auto-responder of some sort. It`d have to
have rules, and I`m not sure if that would work, but otherwise, just
copy-and-paste the form letter.
It`d be something along the lines of, "thank you for your interest in
House of Jerky products. Being a small company, we`re unable at this
time to offer product donations to all the charitable organizations
that contact us. As we grow, we would like to continue our existing
activities, and perhaps at that time we`ll be able to meet your
It`s not perfect, but something along those lines.