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Handle form submissions on any static site in 3 steps — no server required. AI generated Forms in our Pro plan!

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Website, pricing, platforms and company facts side by side.
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| Website | submitrax.com | opalstack.com |
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| Company | Startup from Germany · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


SubmitraX is a form backend service for developers building static and serverless sites. Instead of writing Lambda functions or configuring email APIs, you point your HTML form's action attribute at a SubmitraX endpoint and submissions are delivered to your email, Slack, Discord, or webhooks...
No description of Opalstack yet.
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As answered by people managing SubmitraX and Opalstack.
SubmitraX's answer
SubmitraX is the only form backend that combines a zero-config REST endpoint with AI-generated form templates and a native n8n community node — all in one tool.
Most form backends stop at "we receive your submission and email it to you." SubmitraX goes further:
n8n-nodes-submitrax): pipe submissions directly into any workflow — HubSpot, Notion, Slack, Google Sheets, 400+ integrationsSubmitraX's answer
Three reasons:
1. It works with any host. Unlike Netlify Forms (locked to Netlify) or Vercel's form solutions (locked to Vercel), SubmitraX works wherever your site lives — GitHub Pages, Cloudflare Pages, a bare VPS, or any static host.
2. The setup is genuinely 3 steps. Set your form's action attribute to your endpoint URL, make sure inputs have name attributes, add a submit button. No SDK, no API keys, no configuration files. Competitors often require JavaScript SDKs or account-level API tokens.
3. It's built for automation. The n8n node make SubmitraX the only form backend designed to plug into modern workflow tools out of the box — not as an afterthought.
SubmitraX's answer
Developers building static sites, JAMstack apps, and serverless architectures who need form handling without backend infrastructure.
More specifically:
SubmitraX's answer
SubmitraX was built by a developer who kept solving the same problem on different projects.
Every static site eventually needs a contact form. And every time, the answer was the same: write a serverless function, configure an email service, handle CORS, deploy it, maintain it. For something that should take five minutes.
After doing this for the third time across different client projects, it became clear the pattern deserved its own tool. SubmitraX started as an internal utility and became a product when other developers kept asking to use it.
The goal has always been the same: get out of your way. You build the site. SubmitraX handles the forms.
SubmitraX's answer
s.submitrax.comSubmitraX's answer
Currently used by independent developers and freelancers across Europe and North America.
Share your experience with using SubmitraX and Opalstack. For example, how are they different and which one is better?
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