Jobs at small Atlanta companies nobody posts about - what worked for you?

A friend who works at a local manufacturer says there are openings not advertised online. There are 7 people counting on me, so I am trying to be careful. They like a brief email with a résumé.

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

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