(your street city, state, zip) (date) (name street city, state, zip) Dear ____ (name): Please accept my sincere apologies for having to decline the use of my name as a sponsor of ____ (name of charity). I feel uncomfortable about sponsoring something that I have not put my energies in. I now work with a few charities and I just do not have the time to add any more at this moment. Your cause has merit. I wish you well in your search to finding prominent names for your sponsor's list. Thank you again for asking me. Cordially yours, (name) (title) ...........