Guides
Form backend pillars
Definitional and troubleshooting guides written for humans and AI answers—each links to docs, comparisons, and tutorials.
Start with what is a form backend, then implement with documentation and integration tutorials.
What is a form backend?
A form backend receives HTML or JSON submissions, validates fields, stops spam, stores rows, and emails your team—without you running servers or mail code in every repo.
How to send an HTML form to email without a backend
Point your form at a hosted endpoint or embed script so submissions become email and inbox rows—no Node, PHP mail, or API route in your project.
Contact form spam: honeypot vs Turnstile vs reCAPTCHA
Compare honeypot fields, Cloudflare Turnstile, and Google reCAPTCHA for public contact forms—UX, bot resistance, privacy, and what hosted backends support.
Fixing CORS errors on form submit
Why browser form POSTs fail with Access-Control-Allow-Origin errors, and how allowlists, embed scripts, Server Actions, and ingest secrets fix CORS on contact forms.
Collecting forms from React Native apps
POST JSON from React Native or Expo to the same form backend as your website—field schemas, ingest secrets, validation errors, and one inbox for support.
About these guides
- How are guides different from the blog?
- Guides are category pillars for definitional and problem queries; blog posts are step-by-step integration tutorials.
- Where is the API reference?
- See /docs/api for submit endpoints, status codes, and headers.
- Compare vendors?
- Use /compare for head-to-head tables and /alternatives for roundups.
Put theory into practice.
Create a form and point your site or app at MuxForms.
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