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Spike Hero Light

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What is Spike?

Spike is a powerful form backend service that handles form submissions, email notifications, file uploads, spam protection, and integrations - so you can focus on building your product.

Quick Start

Get your first form working in under 5 minutes

API Reference

Complete API documentation

Integrations

Connect to 20+ services

React Library

Official React components

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Features

Get instant email notifications when someone submits your form. Customize templates, add multiple recipients, and set up auto-responders.
Accept file uploads with your forms. Files are securely stored in S3-compatible storage with configurable size limits and file type restrictions.
Built-in honeypot fields, reCAPTCHA, hCaptcha, Cloudflare Turnstile, and ML-based spam filtering to keep your inbox clean.
Send form data to any URL with webhook support. Includes retry logic and signature verification for security.
Connect to Slack, Discord, Google Sheets, Mailchimp, HubSpot, Notion, Airtable, and many more.
Collaborate with your team. Invite members, assign roles, and manage forms together.

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Why Spike?

  • No backend required - Just point your form to our endpoint
  • Works everywhere - HTML, React, Vue, Next.js, and any framework
  • Secure by default - HTTPS, spam protection, rate limiting
  • Developer friendly - Clean API, webhooks, CLI tool
  • Affordable - Generous free tier, simple pricing