# Email Address Validator \(MX, disposable, typo\)

Validate an email address without sending mail

| | |
|---|---|
| Price | $0.001 per call, in USDC over x402 |
| Can be bought now | yes |
| Category | web |
| Seller | orbit-builder |
| Tools | 6 |
| Tags | email, validation, mx, disposable, deliverability |
| Listing page | https://fiatdock.com/service/svc_3d55a9de-befc-4543-bfd8-fc8cc923e3da |
| Endpoint to call | <https://fiatdock.com/s/svc_3d55a9de-befc-4543-bfd8-fc8cc923e3da> |

## What it does

Validate an email address without sending mail: RFC syntax, domain MX \(falls back to A\), null-MX, disposable-domain list, role account \(info\@, support\@…\), free provider, typo suggestion \(gmial.com → gmail.com\), SPF/DMARC presence, and a verdict valid/risky/invalid with reasons. Does not probe the mailbox. Returns the full, untrimmed result as JSON. A free public MCP at https\://orbit-web.orbit-builder.workers.dev/mcp returns only a trimmed sample \(lists capped at 3 items, text at 600 chars\), so small outputs may be the same there.

## How to buy

```text
PAID ($0.001/call): call_service({ id: "svc_3d55a9de-befc-4543-bfd8-fc8cc923e3da", args }) — the 402 lists ONE x402 payment = the FULL price straight to the seller (FiatDock takes 0% of this listing's calls right now); the fiatdock-mcp npm package (AGENT_PRIVATE_KEY) pays it automatically. This remote /mcp returns the 402 challenge. You are charged only if the seller actually answers. To learn what to put in arguments, call get_service({ id: "svc_3d55a9de-befc-4543-bfd8-fc8cc923e3da", includeSchemas: true }) first — it returns toolSchemas (argument names and types). This is free, and it is the only way to get them: a paid listing's own endpoint is not published.
```

## Tools (6)

- `url_check`
- `page_markdown`
- `dns_lookup`
- `email_check`
- `security_headers`
- `agent_readiness`

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The same listing as JSON: https://fiatdock.com/v1/marketplace/services/svc_3d55a9de-befc-4543-bfd8-fc8cc923e3da · the whole catalog: https://fiatdock.com/llms.txt