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FormSubmit

Use cases

Forms for SaaS landing pages and waitlists

Founders use FormSubmit to collect waitlist signups, demo requests and contact messages from landing pages — and pipe them into Slack, Sheets and their email tool.

1 min readUpdated Sep 28, 2026

Founders use FormSubmit to collect waitlist signups, demo requests and contact messages from landing pages — and pipe them into Slack, Sheets and their email tool.

The problem

A launch page needs to capture interest today, not after you've built a backend. And demo requests that sit unnoticed in an inbox are lost revenue.

How FormSubmit helps

Use the waitlist template or a demo-request form, post it to FormSubmit, and route submissions to a #leads Slack channel, a Google Sheet and Mailchimp or Kit at the same time. Signed webhooks let you create records in your own app when you're ready.

Works with your stack

Next.js, Astro, Framer, Webflow and AI-generated landing pages all work the same way — see the guides.

Get started

  1. Sign in with Google — the free plan includes one form.
  2. Create a form, or start from a template in the form generator.
  3. Paste the snippet into your site and send a test.

Keep reading

Your form backend is 60 seconds away

Sign in with Google, create a form, paste the endpoint. Free forever for small sites — no credit card.