Contact

Gizmobench is made by one person, and the mail goes to that person. Every message is read.

What is welcome

A wrong answer. Say which tool, what you entered, what it said, and what you expected. A wrong number is the most useful message this site can get, and it is fixed with a test so it stays fixed.
A broken tool. Something that does not load, does not respond, or looks wrong on your screen. Include the browser and device, and whether the problem concerns a local file tool or the server-backed IP lookup.
A tool that should exist. Name the job. Requests are weighed against the same rule as everything here: it must have a clear, maintainable implementation, and nobody should be able to hurt themselves by acting on its output.

What is not needed

No account, no ticket number, no form. Plain email is enough. There is nothing to sign up for on this site, and there is no newsletter to unsubscribe from. How the site handles what little it collects is on the privacy page.