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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 token-intel.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 domain status, role account detection, and live DNS MX/SPF/DMARC record existence.
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://token-intel.agentdiet.dev/v1/disposable-email)
Output
Returns a structured object indicating whether the email passed syntax validation, whether the domain belongs to a known disposable/burner provider, whether the account appears to be a role address (e.g. info@, admin@), and the live DNS status of MX, SPF, and DMARC records for the email's domain.
Example use cases
Screen signups for throwaway emails
“Before we add this user to our system, check if the email they gave us — freeuser123@guerrillamail.com — is from a disposable or burner provider, and whether it actually has valid MX records that can receive mail.”
Pre-send deliverability check for outreach
“I'm about to send a cold outreach campaign and I need to verify that contact@acmecorp.io is syntactically valid, has working MX records, and that the domain has SPF and DMARC configured — can you run a full email deliverability check on it?”
Detect role accounts in lead list
“Can you check whether sales@bigcompany.com is a role-based email address like a generic inbox rather than a real person, and confirm whether the domain's DNS is properly set up for email delivery?”
Technical details
Endpoint
GEThttps://token-intel.agentdiet.dev/v1/disposable-email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call email health check covering syntax, disposable provider detection, role account identification, and live DNS MX/SPF/DMARC validation — especially in agent workflows where you need to screen user-submitted emails at registration, enrich lead data, or gate outreach on deliverability signals. Prefer this over simple regex-only validators when live DNS verification matters.
Side effects
- Missing or malformed email parameter returns a 400 validation error
- DNS lookup timeouts for unresponsive domains may result in inconclusive MX/SPF/DMARC results
- Non-existent or newly registered domains may return false negatives for MX records
- Payment failure or insufficient balance via x402 returns a 402 response blocking the lookup
- Extremely new disposable providers not yet in the blocklist may not be flagged
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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