Jobs at small Cleveland companies nobody posts about - 14 months and counting

I asked around at a community meeting and got three leads. I do not usually post, so bear with me. One is a print shop, one is an accounting firm and one is a clinic. What do you write in a cold email?

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

A short email with two sentences about what you can do and your résumé attached worked for me. I followed up after a week.