sendm8.com valid

sendm8

sendm8 is a free, open-source form backend. Point any HTML form at a URL and get the submissions by email, Discord, Slack, Telegram or webhook. No server, no signup required.

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-23T13:04:05.126Z. Cached copy · Source on sendm8.com

# sendm8

> sendm8 is a free, open-source form backend. Point any HTML form at a URL and get the submissions by email, Discord, Slack, Telegram or webhook. No server, no signup required.

Key facts:

- Endpoint: `POST https://sendm8.com/f/{formId}`, or `POST https://sendm8.com/f/{email}` with no account (the owner confirms once by email).
- Send `Accept: application/json` to get JSON back. Success: `{ "ok": true, "id": "…" }`. Failure: `{ "ok": false, "error": { "code": "…", "message": "…" } }` with a 4xx or 5xx status.
- Special fields match Formspree: `_replyto` (or `email`), `_subject`, `_next`, `_gotcha`, `_cc`.
- React apps: `npm install @sendm8/react`. Same `useForm` and `ValidationError` as `@formspree/react`, field errors included. Also render one `<ValidationError>` without a `field`, for errors that aren't about a field.
- Submissions go to the form's owner. sendm8 is not an API for emailing other people: in `/f/{email}` the address is the owner's, never a recipient's, and throwaway domains (yopmail, mailinator…) and reserved ones (example.com, *.test…) are refused. For invitations, receipts or password resets, use an email API such as Resend.
- Forms are created by a person in the dashboard at https://sendm8.com/app. There's no API key for creating forms.

## Docs

- [The basic form](https://sendm8.com/docs/basic-form.md): Point an HTML form at your endpoint, with examples for React, Vue, Astro and Next.js.
- [No signup: email in the URL](https://sendm8.com/docs/zero-signup.md): Use /f/you@example.com with no account, confirm once by email, and claim the form later.
- [Special fields](https://sendm8.com/docs/fields.md): Formspree-compatible underscore fields: _replyto, _subject, _next, _gotcha and _cc.
- [AJAX / fetch](https://sendm8.com/docs/ajax.md): Submit with fetch and Accept: application/json. Response shapes and every HTTP status code.
- [AJAX without writing JavaScript](https://sendm8.com/docs/ajax-helper.md): The /s/v1.js helper: data-sendm8 attributes, success and error messages, and events.
- [Redirects & thank-you page](https://sendm8.com/docs/redirects.md): Where visitors land after a normal post, and why _next must be on an allowed domain.
- [Spam protection](https://sendm8.com/docs/spam.md): Honeypots, automatic spam scoring, Turnstile challenges and allowed domains.
- [File uploads](https://sendm8.com/docs/uploads.md): Accept files with multipart forms, size limits, and how files reach you.
- [Connect Discord](https://sendm8.com/docs/discord.md): Send submissions to a Discord channel with a webhook.
- [Connect Resend (BYOK)](https://sendm8.com/docs/byok.md): Send notification emails from your own domain with your own Resend API key.
- [Webhooks](https://sendm8.com/docs/webhooks.md): Receive submissions as signed JSON: payload, signature verification and retries.
- [Moving from Formspree](https://sendm8.com/docs/formspree.md): Migrate existing Formspree forms: URL changes, fetch and React code, and a prompt for AI assist
…

Machine-readable: GET /v1/resolve?q=sendm8.com · GET /v1/domain/sendm8.com · this page as Accept: application/json or text/markdown · MCP lookup_domain

Automatically discovered from public files. Inclusion does not imply endorsement or publisher participation.

Claim my listing on Agent Web Map for sendm8.com:
1. POST https://agentwebmap.com/v1/sites/sendm8.com/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://sendm8.com/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/sendm8.com/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/sendm8.com).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

Corrections or removal requests: contact the directory.