You agree to the privacy policy below, and the Privacy Policy for Substack, the technology provider.
I collect as little as I can, and I don’t sell your information.
Signups, the subscriber list and the emails are handled by Substack, under its own privacy policy. Substack shows me your email address, when and how you signed up, and whether you open and click the emails. I only use that to run this newsletter.
If you email me or reply to one of mine, I use your address to write back. If your question would make a good post, I’ll ask you first, and I’ll leave out anything that identifies you.
Every email has an unsubscribe link. You can also email me anytime at hello@aconcreteguy.ai to ask what I have or to have it deleted.
If I ever move the list to another service, I’ll say so here first.
The full disclaimer is at aconcreteguy.ai/disclaimer.
Last updated October 8, 2026.