Contact
A real person reads these. There is no ticket system and no bot.
Something's broken, or you have a request
Tell us what happened and we'll fix it. If a code of yours didn't scan, say what phone and what size you printed it — that's the information that actually helps.
You want to sponsor the slot
One honest ad on the page. No tracking, no ad network, no middleman — the money goes straight from you to the person who built this, which is what keeps it free for everyone else. Tell us who you are and what you'd want to say.
Why this is a mailto and not a form
Because a form needs a server, and this site doesn't have one. That's not laziness — it's the whole point. The page loads its own HTML, CSS and scripts and then goes quiet: once it has loaded, making a code fires no requests at all, and nothing you type ever leaves your machine. A contact form would break that, so contact lives here instead of on the tool.
If you'd rather not use email, the source is on GitHub — open an issue there.