Formboost

Formboost is a hosted form submission API that primarily solves the problem of static websites and frontend framework projects lacking a backend to handle form submissions. Users do not need to write API routes, database tables, or email-sending logic; they simply point the form's action attribute to the Formboost endpoint, or call it via POST JSON from any language, to start receiving submissions.

Purpose Formboost is used to provide form backend capabilities for websites without a server. It is suitable for static sites (such as those hosted on GitHub Pages, Cloudflare Pages, Netlify, Vercel, S3, and other platforms) as well as frontend frameworks such as React, Next.js, Vue, SvelteKit, and Astro. Common uses include contact forms, newsletter subscriptions, waitlists, lead collection, support requests, feedback and surveys, NPS score collection, admin forms, and data collection, among others.

Main capabilities

• Single form endpoint: Users generate a unique form submission endpoint and set it in the form action attribute or call it via fetch/cURL. CORS is handled, with no server or database required.
• AI spam filtering: All plans use heuristic rule screening, and starting from the Starter plan, an AI model combines form context to score ambiguous submissions from 0–100, with no CAPTCHA required.
• Email notifications: Each submission is delivered to the specified inbox within seconds, including all fields, and the recipient address and email subject can be set per form.
• Submission dashboard and CSV export: Search and filter submissions by field, date, or spam score, mark items as reviewed, and export the full history as CSV.
• Webhook: POST each submission to any HTTPS endpoint, with support for custom request headers, test payloads, and a record of each delivery (Starter plan and above).
• Native integrations: Deliver directly to Slack, Discord, Telegram, Google Sheets, Zapier, and n8n. Three of the chat apps are already included in the free plan.
• Reliability: It runs on globally distributed infrastructure. Submissions receive an immediate response first, then are queued, quota-checked, spam-screened, stored, and delivered to all destinations; slow or failed destinations do not delay the response or cause submissions to be lost.

How to use

1. Sign up for a free account, no credit card required, in less than a minute, and get an API endpoint and dashboard.
2. Copy the unique form from the dashboardSubmit a single API endpoint URL.
3. Set this URL as the form's action attribute, or call it via fetch/cURL. For an HTML form, submission redirects by default to a Formboost-hosted thank-you page; if the form sets _redirect, it redirects to your own page. For a fetch() call, it returns a 202 status code and JSON.
4. Submissions appear immediately in the dashboard, and email notifications and Webhooks trigger automatically.

Use cases

• Serverless static sites or frontend projects that need a form backend.
• Developers who want to avoid maintaining email notifications, validation, secure storage, Webhooks, and automation.
• Users migrating from Formspree, Getform, Web3Forms, Basin, or Netlify Forms can switch by simply changing the form action attribute.
• Freelancers, indie developers, growing teams, and large-scale enterprise needs.

Limits

• Free plan: 10 forms, 500 submissions per month, one target per form, including email, Slack, Discord, and Telegram delivery. Free forever, no expiration date, no credit card required.
• Paid plans start at $9 per month, offering higher limits, custom Webhooks, Google Sheets, Zapier, n8n, and Auto Reply. AI spam scoring is available starting with the Starter plan, while the free plan uses only heuristic rules.
• Specific submission limits, maximum form counts, and a full feature comparison require consulting the official pricing page; the official text does not list all details.
• More information about data storage location, compliance certifications, and specific AI model types is not currently provided.