Build a lead generation form

A lead gen form collects enough contact and fit detail for a useful next step. If the receiving team won't use a field, don't ask for it.

Ask only what sales will use

const leadForm = defineForm({
  id: "sales-contact",
  title: "Talk to sales",
  pages: [{
    id: "contact",
    blocks: [
      { id: "email", kind: "email", label: "Work email", required: true },
      { id: "company", kind: "short_text", label: "Company", required: true },
      {
        id: "team_size",
        kind: "dropdown",
        label: "Team size",
        options: [
          { id: "1-10", label: "1 to 10" },
          { id: "11-50", label: "11 to 50" },
          { id: "51+", label: "51 or more" },
        ],
      },
      { id: "need", kind: "long_text", label: "What are you trying to improve?" },
      { id: "utm_source", kind: "hidden", label: "UTM source", paramName: "utm_source" },
    ],
  }],
  settings: { submitLabel: "Request a conversation", successTitle: "Request received" },
});

Deliver to the team

Enable email notification for the form, or connect Google Sheets, Notion, Zapier, or a webhook. Slack sends a link-only signal by default; explicitly allowlist only the few lead fields that belong in that channel.

Keep CRM credentials and enrichment calls in a backend or automation. Respondents can edit URL attribution, so use it for analysis — not for authorization or billing decisions.

Test the handoff

Submit with and without the optional qualifiers, confirm the attribution fields, and verify the receiving system can dedupe by Fillo response ID. Then read the confirmation text: it should set a realistic response time, not one the operations team can't keep.

Try it

Start with a prompt and your coding agent builds the first form, staged for your review — or open the editor.

Related

• Contact example: See a compact native contact form.
• Capture UTM attribution: Preserve campaign values in hidden fields.
• Notifications: Send owner alerts and respondent receipts.
• Zapier: Route a lead into a supported CRM workflow.