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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 mcp-security.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/DMARC record checks to assess deliverability and legitimacy.
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://mcp-security.agentdiet.dev/v1/disposable-email)
Output
Returns a structured object indicating whether the email passes syntax validation, whether the domain is a known disposable/burner provider, whether the address is a role account, and the live DNS status of MX, SPF, and DMARC records for the domain.
Example use cases
Screening signups for fake emails
“We're getting a lot of signups with throwaway emails — can you check if support@guerrillamail.com is a disposable or burner address and whether its domain even has working mail servers?”
B2B lead email validation before outreach
“Before I add jane.smith@prospectcorp.com to our outreach sequence, can you verify it's a real deliverable address, not a role account, and that the domain has SPF and DMARC records?”
Email hygiene audit for a single contact
“I want to know if noreply@randomstartup.io is actually deliverable — check the syntax, whether it's a role-based address, and look up the MX and SPF records for that domain.”
Technical details
Endpoint
GEThttps://mcp-security.agentdiet.dev/v1/disposable-email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, multi-signal email check combining syntax validation, disposable provider detection, role-account flagging, and live DNS MX/SPF/DMARC lookups in a single call. Prefer it over simple regex-only validators when deliverability and anti-fraud signals matter, such as gating user signups, qualifying B2B leads, or auditing contact lists before email campaigns.
Side effects
- Missing or malformed email parameter returns a 400/422 error
- DNS lookup timeout if the domain's nameservers are slow or unresponsive
- Unknown or newly registered domains may lack MX/SPF/DMARC records, returning empty DNS fields
- Payment not fulfilled triggers an HTTP 402 response requiring x402 USDC payment
- Rate limiting may occur for high-frequency queries without proper payment
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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