Before you paste
- • Grab your form key from any list's detail page in the dashboard. It looks like
wz_followed by 24 characters. - • Add the domain you'll host the form on to Allowed Domains in Settings — including any staging or preview domain. Submissions from anywhere else are rejected.
- • Field names may use letters, digits, underscores and hyphens, must start with a letter or underscore, and names beginning with
_are reserved. Up to 20 fields, 1,000 characters each. - • Every field you send becomes a column in your dashboard and CSV export automatically. Nothing to declare up front.
Previews are simulated. They render from the same markup and stylesheet the code tabs give you, so they're accurate — but they don't post anywhere, so click through them freely without filling your list with test rows.
Troubleshoot form errors
The usual suspects, in the order they usually bite.
Full status-code reference in the Responses & Errors section of the docs.
Need a form key?
Create a list and you'll have one in about thirty seconds. The Sandbox plan is free, no card required — enough to wire up any sample here and watch the first submissions land.