Web3Forms is genuinely simple: point your HTML form at their endpoint with an access key and you get the submission emailed to you; no signup required for the basics, no server. For a plain contact form on a static page, it's hard to beat on setup time.
01
Web3Forms emails you the submission. mailnix stores every submission in an inbox with spam scoring, statuses (new / replied / archived), retention windows, and CSV export, so nothing is lost if an email is missed.
02
You hand-build the HTML and validation. mailnix gives you a designer with field validation, conditional logic, themes, a layout grid, and a multi-step stepper.
03
Web3Forms handles inbound form posts only. mailnix also gives you a transactional email API in front of any provider on the same account.
04
There's no MCP tooling to let an AI assistant create, publish, or manage forms for you.
| Web3Forms | mailnix | |
|---|---|---|
| Contact form with no backend | Yes | Yes |
| Submissions stored in an inbox | Email forwarding | Searchable inbox, statuses, retention, CSV |
| Spam scoring | Basic | Scored on every submission |
| Form designer (validation, logic, themes) | No (hand-coded) | Full designer + multi-step + layout grid |
| Hosted form page + embed | Endpoint only | Hosted page on forms.mailnix.ch + iframe embed; script embed on paid plans |
| File uploads (virus-scanned) | Limited | On paid plans: virus-scanned, EU object storage, signed URLs |
| Transactional email API | No | One API in front of SES/Postmark/SendGrid/any SMTP |
| Built for AI agents (MCP) | No | 14 form_* MCP tools cover the whole lifecycle |
| EU-hosted / GDPR | Varies | EU data centres, GDPR-ready |
Web3Forms details are summarised from public information and may change; check their current docs before deciding.
Submissions land in an inbox with spam scoring, statuses, per-form retention, CSV export, and notification digests to addresses you verify: the message is saved, not just forwarded.
Field validation, conditional logic, themes, a 12-column layout grid, image fields, and a multi-step stepper. Edit from the dashboard or let an AI assistant do it over MCP.
mailnix never auto-emails the person who filled in your form. A reply or confirmation is a per-submission action by you, with every send recorded in an audit ledger.
The same account that collects the form can send transactional email through any provider, with traces and a shared suppression list.
Stick with Web3Forms if you only need a plain contact form emailed to you from a static page, and you don't care about storing submissions, a designer, file handling, or sending email. It's the quickest possible setup for that. Move to mailnix when you want the submissions actually stored and searchable, a real designer and hosted pages, virus-scanned uploads (paid plans), and an email API on the same account.
Yes. You can post a form with no backend, exactly like Web3Forms, but every submission is stored in a spam-scored inbox, and you also get a designer, hosted pages, and an email API.
No. mailnix is the backend and the store; no server and no separate database to run.
Yes, via hourly or daily notification digests to addresses you verify, and every submission is also kept in the inbox.
Yes: 14 form_* MCP tools cover create, publish, embed, and a guarded reply flow that always drafts for your review first.
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