Mekler AI Email/Domain Mail Configuration Checker

x402

Mekler AI Email/Domain Mail Configuration Checker is a paid API for AI agents from api.mekler.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).

Checks an email address or domain for mail configuration health: syntax, MX records, SPF, DMARC, optional DKIM selector, and disposable-domain status.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

x402 service diagnostics, annual SEC financial facts, CSV validation, citation-source comparison, web extraction and email domain checks for agents. Retrieve six annual US-GAAP USD fields by CIK with filing links, same-filing growth checks and optional observed revisions; check supplied CSV and citations; extract public page text, rendering JavaScript in a headless browser when needed; inspect email address syntax and mail-domain DNS. Pay per call with native USDC on Base or Solana via x402, without a separate API key. Wallet-first free trials cover CSV, column-spec, citation and static-page operations.

Output

Returns a structured JSON object with: domain name, syntax status (for email-kind inputs), mail route (MX records or A/AAAA fallback or null MX), SPF record and DNS status, DMARC record and DNS status, DKIM record status (if selector supplied), disposable-domain flag, and mailbox_exists (always 'unknown' — no mailbox verification is performed).

Example use cases

Pre-send domain health audit

“Before I start my email campaign, can you check the mail configuration for mybrand.com — specifically whether it has valid MX, SPF, and DMARC records set up?”

Disposable email detection

“I just got a signup from user@mailnull.com — can you check whether that domain is on the disposable email list and whether it has real mail routing?”

DKIM selector verification

“Check the email config for acme.org and also verify the DKIM selector named 's1' — I want to confirm the full authentication chain is in place.”

Technical details

Endpoint

POSThttps://api.mekler.ai/v1/email/domains/check-mail-configuration?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a fast, structured DNS-level audit of email authentication configuration (MX, SPF, DMARC, DKIM) for a domain or email address, including a disposable-domain check — without needing actual mailbox verification or SMTP probing. It is especially useful for pre-flight checks before sending campaigns, validating inbound signup addresses, or auditing domain email hygiene.

Side effects

DNS lookup failure returns status 'unknown' for affected records rather than an error
No mailbox existence verification — mailbox_exists always returns 'unknown'
DKIM check returns 'selector_required' if no selector is supplied
Disposable domain list is small and known — emerging disposable domains may not be flagged
Invalid or malformed input value may fail schema validation
Does not predict actual email delivery success

Input

Schema · Request body

Field	Type	Description
kind	string
value	string
selector	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "spf": {
      "dns": {
        "status": "ok",
        "ttl_seconds": 60
      },
      "record": "v=spf1 -all",
      "status": "record_found"
    },
    "dkim": {
      "status": "selector_required"
    },
    "dmarc": {
      "dns": {
        "status": "ok",
        "ttl_seconds": 60
      },
      "record": "v=DMARC1; p=reject",
      "status": "record_found"
    },
    "domain": "example.org",
    "syntax": "not_applicable",
    "service": "email-domain-checks",
    "disposable": "not_on_small_known_list",
    "mail_route": {
      "mx": {
        "status": "ok",
        "values": [
          [
            10,
            "mail.example.org"
          ]
        ],
        "ttl_seconds": 60
      },
      "status": "mx_configured"
    },
    "mailbox_exists": "unknown",
    "schema_version": "1"
  }
}

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