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B2A Email Deliverability, MX, SPF & DMARC Verifier
B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from llms-generator.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-21).
Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX, SPF, and DMARC record verification.
Price / call$0.005
Success—
StatusUnknown
How this service works
Validates email syntax, disposable/burner provider status, role accounts, and live DNS MX/SPF/DMARC records. (Live x402 v2, IETF MPP & MCP endpoint at https://llms-generator.agentdiet.dev/v1/spf-dmarc-auditor)
Output
Returns a structured object indicating email syntax validity, whether the domain is a known disposable or burner provider, whether the address appears to be a role account, and live DNS lookup results for MX records (mail server presence), SPF record (sender policy), and DMARC record (anti-spoofing policy) — giving a comprehensive deliverability and authentication picture for the email's domain.
Example use cases
Block disposable signups at registration
“Before we create this account, check if the email alex93@guerrillamail.com is a throwaway or burner address and whether its domain even has proper MX records so we know if it can receive mail.”
Pre-send deliverability audit for outreach
“I'm about to send a cold outreach campaign to contact@acmecorp.io — can you verify the email is syntactically valid, the domain has live MX records, and that SPF and DMARC are configured correctly so my emails don't bounce or get flagged?”
Detect role accounts in lead lists
“I have a lead with email info@bigcompany.com — can you tell me if that's a role-based address, whether the domain has valid MX records, and if their SPF and DMARC DNS records are properly set up?”
Technical details
Endpoint
GEThttps://llms-generator.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a multi-factor email validation that goes beyond simple regex checks — specifically when you need to simultaneously confirm deliverability (live MX lookup), detect throwaway addresses, flag role accounts, and audit SPF/DMARC DNS authentication records in a single API call. Prefer it over basic syntax validators when email hygiene, spam risk, or authentication compliance matters.
Side effects
- Invalid or malformed email address input returns a syntax error or validation failure
- Domain does not exist in DNS, resulting in no MX records found
- Temporary DNS resolution failures may cause false negatives on MX/SPF/DMARC lookups
- Some disposable providers may not be in the blocklist, leading to missed detections
- Rate limiting or payment failures (HTTP 402) may block the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| emailrequired | string | Email address to validate for syntax, MX deliverability, and disposable risk |
Output
Schema · Response
{
"type": "object"
}Reviews
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