From The Old Farts Files, our own rejection. Not too disheartening but not making us dance in joy either.
I really like your writing style and appreciate your humor. However, I am not sure how marketable this style of book is. I can easy understand incorporating letters as a means of communication and a way to further plot within a story. Many have done it, and done so successfully. Having a whole book based on letters is a bit difficult for a reader to follow and develop a firm hold on characters, setting, etc.