Here’s the response I received when I offered to do an international house exchange with a family in Paris (that I knew was looking at many other locations worldwide).
Thank you for the offer, but we are not able to consider it at this time. Good luck.”
This rejection letter did not sting. I think that’s because the writer took time to personalize it (“Dear Gene”) and because the rejection was not final (“at this time”).
Little touches, really, but that’s what effective communication involves