InputHaven vs Formspree: A Detailed Comparison for 2025

Why compare InputHaven and Formspree?

Formspree is one of the most well-known form backend services. It's been around since 2014 and has a solid product. But pricing and features have evolved since then, and newer alternatives offer more for less.

This is an honest comparison. We'll note where Formspree has advantages too.

Pricing comparison

Free tier

InputHaven's free tier offers 10x more submissions and 3x more forms, plus API access that Formspree restricts to paid plans.

Paid plans

For half the price, InputHaven gives you 2.5x more submissions and 2.5x more forms.

At scale

InputHaven Pro costs 52% less than Formspree Business and delivers 2x more submissions.

Feature comparison

Features InputHaven has that Formspree doesn't

• AI spam filtering — Claude-powered spam detection that understands context and intent. Catches sophisticated spam that keyword filters miss. Available on Starter+.
• Conditional email routing — Route submissions to different email addresses based on field values. Send sales inquiries to sales, support to support. Available on Starter+.
• Visual form builder — Build forms visually in the dashboard and export production-ready HTML, React, or Next.js code.
• API on free tier — Programmatic access to forms and submissions on the free plan. Formspree restricts API access to paid plans.
• OpenAPI specification — Full API spec at /openapi.yaml. Generate typed clients in any language.
• LLM-friendly docs — Machine-readable docs at /llms.txt for AI coding assistants.

Features both services have

• Email notifications
• Custom auto-responders
• Spam protection (honeypot, keywords)
• File uploads (paid)
• Webhooks (paid)
• HMAC-signed webhooks
• Domain allowlists
• CSV export
• REST API (paid on Formspree)
• Submissions dashboard
• Custom redirect URLs
• reCAPTCHA support

Features Formspree has that InputHaven doesn't

• Longer track record — Formspree has been around since 2014
• Formspree CLI — command-line tool for managing forms
• React library — @formspree/react (InputHaven also has @inputhaven/react)

Migration guide

Switching from Formspree to InputHaven is straightforward:

• Create an InputHaven account (free)
• Create a form in the dashboard
• Replace your form's action URL:

<!-- Before (Formspree) -->
<form action="https://formspree.io/f/xxxxxxx" method="POST">

<!-- After (InputHaven) -->
<form action="https://inputhaven.com/api/v1/submit" method="POST">
  <input type="hidden" name="_form_id" value="your-form-id" />

• Configure email notifications in the InputHaven dashboard
• That's it

Existing submissions stay in Formspree. New submissions go to InputHaven.

Bottom line

If you're currently on Formspree or evaluating form backends, InputHaven offers:

• 10x more free submissions (500 vs 50)
• 80% lower paid plan prices ($5/mo vs $25/mo for comparable features)
• AI spam filtering that Formspree doesn't offer
• Email routing that Formspree doesn't offer
• Free API access that Formspree restricts to paid plans

The switch takes about 5 minutes.