FormSubmit and Formspark both help you collect form submissions without building your own backend, but they take different approaches. Formspark is a lightweight form backend focused on simplicity. FormSubmit is a headless form backend: you keep full control of your form's HTML and design, and every plan — including Free — includes spam protection, file uploads, webhooks and all integrations.
At a glance
| FormSubmit | Formspark | |
|---|---|---|
| Approach | Headless endpoint + optional builder & hosted pages | Hosted form endpoint |
| Works with any host | Yes | Yes |
| Your own HTML & design | Yes | Yes |
| Pricing model | Monthly or yearly subscription | One-time submission bundles that don't expire |
| Free plan | 1 form, 50 submissions/month, 100 MB storage | 250 submissions in total, 10 forms |
| File uploads | Stored privately on every plan | Via a third-party uploader (e.g. Uploadcare, Cloudinary) |
| Integrations on free plan | All (webhooks, Slack, Discord, Sheets, Airtable, Mailchimp, Kit) | See their site (per-plan availability not listed) |
About Formspark
Formspark provides simple form endpoints for developers with notifications and basic integrations.
What FormSubmit does differently
- Every integration included on every plan.
- A layered spam system with configurable sensitivity, blocked keywords and BYO captcha.
- Private file uploads with direct browser uploads for large files.
- Retention controls including forward-only mode.
Pricing and free plan
Prices checked October 2026. Formspark figures come from formspark.io/pricing, and FormSubmit figures from our pricing page.
| FormSubmit | Formspark | |
|---|---|---|
| Free | $0: 1 form, 50 submissions every month, 100 MB | $0: 250 submissions to start, 10 forms, 5 team members |
| Paid | Starter $10/mo (3 forms, 500/mo), Pro $25/mo (15 forms, 2,500/mo), Business $50/mo (unlimited forms, 10,000/mo) | Upgrade: $25 one-time (shown discounted from $50) for 50,000 submissions, 100 forms, 50 team members |
| Renewal | Monthly allowance resets on the 1st | Bundles don't expire; buy another when you run out |
Formspark lists spam filtering (Botpoison, hCaptcha, reCAPTCHA, Turnstile, honeypot), webhooks, Slack, Zapier, Google Sheets, Notion, autoresponders, CSV/JSON export and a REST API. Its pricing table doesn't show which features are on which plan. FormSubmit's yearly billing gives two months free.
Limits
- Formspark: the free allowance is 250 submissions in total, not per month. Files go to a third-party storage provider, per its file upload docs.
- FormSubmit: 50 submissions a month on Free. Files can be up to 10 MB each (25 MB on Pro and Business). Spam doesn't count toward the quota. Over-limit submissions are stored but locked until you upgrade or the month resets.
When to choose Formspark
You'd rather pay once than subscribe. For low or uneven traffic, a non-expiring bundle of 50,000 submissions can last a long time. Formspark also fits if you want a REST API for reading submissions.
When to choose FormSubmit
- You want your form to look exactly like the rest of your site.
- You want integrations, captcha and spam protection without upgrading.
- You care about privacy details: hashed IPs, encrypted secrets, private files, minimal Google permissions and configurable retention.
- You build many sites (agency, freelancer) and want one dashboard for all of them.
How to switch
- Create a FormSubmit form.
- Replace the form's
actionURL (or yourfetchURL) with your FormSubmit endpoint. - Keep your field names — emails and exports will look the same.
- Recreate integrations in the form's Integrations tab and send a test.
Need help? The docs and guides cover every framework. Comparing other options? See FormSubmit vs Web3Forms, FormSubmit vs Formspree, FormSubmit vs Basin and our Formspree alternatives roundup.