Jobs at small Dallas companies nobody posts about, social media manager here

A friend who works at a local manufacturer says there are openings not advertised online. It has been weighing on me all week. They like a brief email with a résumé. What do you write in a cold email?

Thanks for writing this out. I went through something close to it 4 months ago, and it got easier once I kept a simple log of every call and form.

Visiting in person worked for a trades job. For office jobs, email was better.