# Macaroon Network Email Domain Deliverability Check

> Macaroon Network Email Domain Deliverability Check is a paid API for AI agents from api.macaroonnetwork.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Checks whether a domain is technically configured for email delivery by querying public DNS records for MX, SPF, DMARC presence/policy, and optionally DKIM selectors — no test emails sent.

## Facts

- Endpoint: POST https://api.macaroonnetwork.com/execute/email-domain-deliverability-check-v1
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/macaroon-network-email-domain-deliverability-check-4a5d5e9f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YMl5ESVdfziMgr7fTascX

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability macaroon-network-email-domain-deliverability-check-4a5d5e9f -d '<json body>'
```

Example prompt: Can you check whether stripe.com is properly configured for email delivery — specifically look for MX, SPF, and DMARC records, and also check the DKIM selector 'google'?

## When to prefer this

Choose this endpoint when you need a fast, privacy-safe, no-side-effect check of a domain's email DNS configuration using only public DNS records. It is ideal for pre-send validation, phishing/spoofing triage, or confirming your own domain's email setup. Prefer it over email verification services when you do NOT need mailbox existence checks, leaked-email database lookups, or proprietary deliverability scoring — just clean, raw DNS signal.

## Known failure modes

- Domain does not exist in DNS — returns negative results for all checks
- DKIM selector not provided — selector check skipped
- Public DNS resolver temporarily unavailable — request may time out or return error
- Malformed domain input — validation error returned
- DMARC record exists but is malformed — policy may be unparseable

## How this service works

Checks whether a domain appears technically configured for email delivery, from direct public DNS records only: MX presence, SPF presence, DMARC presence and policy, and an optional DKIM selector check. Queries DNS over HTTPS against a public resolver -- no test emails sent, no mailbox existence verification, no personal data, no leaked-email databases, no proprietary deliverability dataset.

## Output

Returns a structured result indicating whether the queried domain has MX records present, SPF record present, DMARC record present and its policy level (e.g. none/quarantine/reject), and optionally whether a specified DKIM selector resolves — all sourced from live public DNS over HTTPS with no test emails sent.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/macaroon-network-email-domain-deliverability-check-4a5d5e9f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.macaroonnetwork.com](https://www.zero.xyz/host/api.macaroonnetwork.com/llms.txt)