Small employers hiring around Boston (update)

Two small Boston 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. They prefer people who can start within a couple of weeks.

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

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