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Documentation Index

Fetch the complete documentation index at: https://doc.spike.ac/docs/llms.txt

Use this file to discover all available pages before exploring further.

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Overview

Spike and FormSubmit are both form backends that work with static sites. FormSubmit is known for its simplicity — no account required. Spike offers more features while staying easy to set up.

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Feature Comparison

FeatureSpikeFormSubmit
SubmissionsUnlimitedUnlimited
Account requiredYes (free)No
Dashboard✅ Full dashboard❌ Email only
File uploads✅✅
Spam protection✅ Honeypot, reCAPTCHA, hCaptcha, Turnstile, ML✅ Honeypot, reCAPTCHA
Email notifications✅ Customizable✅ Basic
Auto-responders✅ (Pro)✅
Webhooks✅❌
API access✅❌
Integrations21+❌
Custom redirects✅✅
Submission history✅ Searchable❌
Export data✅ CSV/JSON❌
AJAX support✅✅

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Why Choose Spike

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Full Dashboard

Spike gives you a dashboard to view, search, and manage all your submissions. FormSubmit sends submissions to your email — there’s no dashboard, no search, and no way to export data.

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Webhooks and Integrations

Spike supports webhooks and 21+ integrations (Slack, Discord, Google Sheets, Notion, etc.). FormSubmit has no webhook or integration support.

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API Access

Spike provides a full REST API to programmatically manage forms and submissions. FormSubmit has no API.

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Better Spam Protection

Both support honeypot and reCAPTCHA. Spike also supports hCaptcha, Cloudflare Turnstile, ML-based filtering, email/domain/IP blocklists, and work email validation.

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Submission History

Every submission is stored in your Spike dashboard with search, filtering, and export. With FormSubmit, if you lose the email, the submission is gone.

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When FormSubmit Might Be Better

  • If you want zero setup — no account, no dashboard, just an email address in the action URL
  • If you only need email delivery and nothing else

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Setup Comparison

Spike: 
<form action="https://api.spike.ac/f/YOUR_FORM_SLUG" method="POST">
  <input type="text" name="_gotcha" style="display:none">
  <input type="email" name="email" required>
  <textarea name="message" required></textarea>
  <button type="submit">Send</button>
</form>
FormSubmit: 
<form action="https://formsubmit.co/your@email.com" method="POST">
  <input type="text" name="_honey" style="display:none">
  <input type="email" name="email" required>
  <textarea name="message" required></textarea>
  <button type="submit">Send</button>
</form>
Both are simple. The difference is what happens after submission — Spike stores, notifies, and integrates. FormSubmit just emails.