Formpost vs onsubmit.dev: Which is Better in 2026?
A comprehensive comparison of Formpost and onsubmit.dev covering features, pricing, use cases, and which tool is the right choice for your needs.
⚡ Quick Verdict
Choose Formpost if:
- →You want more affordable paid plans (from $15/mo)
- →You need plain html form post — no iframe, stylesheet or badge injected or llm-based ai review catching spam that rule-based filters miss
Choose onsubmit.dev if:
- →You need endpoint issued after an email and a six-digit code — no password, no card or works with any stack that can send a post, from static html to webflow
Formpost and onsubmit.dev get named on this page. Does your tool?
Comparisons like this one are what ChatGPT, Claude and Perplexity read when someone asks which of the coding & development to recommend — and they can only weigh up tools they can find. Add yours to the coding & development category: a free listing publishes after review. Want it live in minutes with a Verified badge instead? That option is on the form, one-time, no subscription.
Formpost vs onsubmit.dev: At a Glance
Pricing Comparison: Formpost vs onsubmit.dev
Understanding the pricing differences between Formpost and onsubmit.dev is crucial for making the right choice. Here's how their plans compare side by side.
Formpost Pricing
onsubmit.dev Pricing
💡 Pricing takeaway: Both Formpost and onsubmit.dev offer free tiers, making it easy to try before you buy. Compare the specific plans to find the best value for your use case.
Feature-by-Feature Comparison
Here's how every feature from Formpost and onsubmit.dev stacks up.
What Makes Each Tool Unique
🔵 Unique to Formpost
Features available in Formpost but not in onsubmit.dev:
- ✓Plain HTML form POST — no iframe, stylesheet or badge injected
- ✓LLM-based AI review catching spam that rule-based filters miss
- ✓Honeypot, hCaptcha, reCAPTCHA, Turnstile, domain locking and rate limiting
- ✓Attachments stored on Amazon S3, submissions searchable and exportable
- ✓Autoresponders sent from your own DKIM-signed domain
🟣 Unique to onsubmit.dev
Features available in onsubmit.dev but not in Formpost:
- ✓Endpoint issued after an email and a six-digit code — no password, no card
- ✓Works with any stack that can send a POST, from static HTML to Webflow
- ✓13 notification channels including Slack Block Kit and HMAC-signed webhooks
- ✓Anti-spam, file attachments and AI auto-reply on paid tiers
- ✓Published Formspree comparison and a public status page
Use Case Recommendations
Best for: Formpost
Formpost is a form-to-email API for static and JAMstack sites: an HTML form posts to a Formpost endpoint and the submission arrives by email and in a searchable dashboard, with no server to deploy and no backend code to maintain. It is deliberately an API rather than a widget — no iframe, no injected stylesheet, no badge in the corner — so the markup and CSS stay exactly as written, and the site lists working support across HTML, React, Next.js, Vue, Nuxt, Svelte, Astro, Angular, Alpine, Hugo, Jekyll, Eleventy, Gatsby, Webflow, Framer, WordPress, PHP and Rails. The engineering choices are described openly: the submit endpoint is a small Go service that only accepts and stores the request, with email delivery and integrations happening afterwards so a slow mail provider never stalls a visitor, and file uploads go straight to Amazon S3 with the database in an AWS region. Spam handling is layered — honeypot field, hCaptcha, reCAPTCHA and Turnstile, domain locking, keyword and IP blocking, rate limiting — and above those an LLM-based AI review reads the submissions the rules let through and judges intent. Operational details are handled too: per-form custom redirects to your own thank-you page, autoresponders sent from your own DKIM-signed domain, multiple recipients, webhooks with Slack, Discord and Telegram, a submissions REST API, and CSV or JSON export. Deleting a form deletes its submissions with it.
Ideal use cases:
- •Teams or individuals who need plain html form post — no iframe, stylesheet or badge injected
- •Teams or individuals who need llm-based ai review catching spam that rule-based filters miss
- •Teams or individuals who need honeypot, hcaptcha, recaptcha, turnstile, domain locking and rate limiting
- •Teams or individuals who need attachments stored on amazon s3, submissions searchable and exportable
- •Anyone focused on forms workflows
- •Anyone focused on static-sites workflows
Best for: onsubmit.dev
onsubmit.dev is a hosted form backend: you point a plain HTML form's action attribute at a generated endpoint, or POST to it with fetch, and every submission is captured and fanned out to wherever your team already works. There is no server to run, no database to provision and no deploy step, which is the whole argument for the category — the product replaces the small piece of backend code that otherwise has to exist purely so a static site can receive a message. Onboarding is deliberately account-light: you enter an email, verify a six-digit code, and the endpoint is issued, with no password and no credit card. Because it only requires the ability to send a POST, it is framework-agnostic by construction, and the vendor lists React, Next.js, Vue, Nuxt, Svelte, Astro, Hugo, Gatsby, Eleventy, Jekyll, WordPress, Webflow, Shopify and the major static hosts among supported integrations. Thirteen notification channels are available: email, Telegram, Discord with rich embeds, Slack Block Kit messages, signed webhooks with optional HMAC, Zapier catch hooks, n8n, Notion, Google Sheets, Airtable, Jira and IFTTT. Paid tiers add anti-spam protection, file attachments, multi-email notifications, custom redirect and thank-you pages, white-labelling and an AI auto-reply. The site publishes a direct comparison against Formspree and maintains a status page.
Ideal use cases:
- •Teams or individuals who need endpoint issued after an email and a six-digit code — no password, no card
- •Teams or individuals who need works with any stack that can send a post, from static html to webflow
- •Teams or individuals who need 13 notification channels including slack block kit and hmac-signed webhooks
- •Teams or individuals who need anti-spam, file attachments and ai auto-reply on paid tiers
- •Anyone focused on forms workflows
- •Anyone focused on developer-tools workflows
💻 Other Coding & Development Tools to Consider
Formpost and onsubmit.dev aren't the only options. Here are other popular tools in the same space:
Cursor
AI-first code editor with powerful inline generation
GitHub Copilot
AI pair programmer for code suggestions
Windsurf
AI-native IDE with autonomous coding agents
v0
Generate React UI components from text prompts
Bolt
AI full-stack app builder with instant preview
Devin
Autonomous AI software engineer for full projects
Is one of these your tool?
This page ranks for "Formpost vs onsubmit.dev" — buyers comparing the two land here, and ChatGPT and Perplexity cite it. Claim your listing for $19 one-time — no subscription, nothing to cancel — and get a Featured badge, top placement in your category, and a permanent dofollow backlink. Prefer it ongoing? Monthly is one click away on the next page.
Frequently Asked Questions
Is Formpost better than onsubmit.dev?
It depends on your needs. Formpost offers 5 key features including Plain HTML form POST — no iframe, stylesheet or badge injected and LLM-based AI review catching spam that rule-based filters miss, while onsubmit.dev provides 5 features including Endpoint issued after an email and a six-digit code — no password, no card and Works with any stack that can send a POST, from static HTML to Webflow. Formpost uses a freemium model with a free tier, while onsubmit.dev is freemium with free access available. Choose based on which features and pricing model align with your requirements.
Is Formpost cheaper than onsubmit.dev?
onsubmit.dev doesn't have standard paid plans, while Formpost starts at $15/month. Both tools offer free tiers, so you can try each before committing. Always check the official websites for the most current pricing.
Can I use Formpost and onsubmit.dev together?
Yes, many users combine Formpost and onsubmit.dev in their workflow. Formpost excels at plain html form post — no iframe, stylesheet or badge injected, while onsubmit.dev shines with endpoint issued after an email and a six-digit code — no password, no card. Using both allows you to leverage the strengths of each tool, though this means managing two subscriptions — though free tiers can help manage costs.
What's the main difference between Formpost and onsubmit.dev?
While both are coding & development tools, Formpost emphasizes plain html form post — no iframe, stylesheet or badge injected, whereas onsubmit.dev is known for endpoint issued after an email and a six-digit code — no password, no card. The best choice depends on your specific workflow and feature priorities.
Learn More
📬 Get the best new AI tools delivered weekly
One concise email with fresh launches, trending picks, and featured standouts.