Jobs at small Memphis companies nobody posts about, call-centre agent here

Two small Memphis employers told me they are hiring but have not posted yet. I have read a lot of threads here and could not find my exact situation. One is a print shop, one is an accounting firm and one is a clinic. What do you write in a cold email?

Keep everything in writing and save the confirmation numbers. It saved me later.

Small employers often hire on recommendation. Ask neighbours, former co-workers and your library.