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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 mesh.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-23).
Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX/SPF/DMARC record checks to assess real deliverability.
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://mesh.agentdiet.dev/v1/mx-deliverability-verifier)
Output
Returns a structured object indicating whether the email passes syntax validation, whether the domain is a known disposable/burner provider, whether it is a role-based address (e.g. info@, noreply@), and whether the domain has valid MX, SPF, and DMARC DNS records, along with overall deliverability assessment.
Example use cases
Lead quality screening before outreach
“Before we add these signups to our CRM, check whether contact@acmecorp.io is actually deliverable — I want to know if the domain has MX records, whether it's from a throwaway email service, and if the SPF and DMARC policies are set up properly.”
Blocking disposable emails at registration
“A new user just signed up with guerrillamail123@yopmail.com — can you verify whether this is a burner or disposable email provider so we can decide whether to block the account?”
Email hygiene audit for cold outreach list
“I'm about to send a cold outreach campaign and want to make sure ceo@startupexample.com won't bounce — can you check if it has live MX records and whether the domain has SPF and DMARC configured?”
Technical details
Endpoint
POSThttps://mesh.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, live email deliverability check that goes beyond simple syntax validation — covering disposable provider detection, role account identification, and real-time DNS MX/SPF/DMARC record verification in a single call. Prefer it over lightweight regex-only validators when lead quality, inbox deliverability, or fraud prevention are at stake.
Side effects
- Malformed or missing email input returns a 400 validation error
- DNS lookup timeouts may result in indeterminate MX/SPF/DMARC status
- Novel or very new disposable providers may not be flagged as such
- Payment not provided or payment failure returns HTTP 402
- Internal DNS resolution errors may return 5xx responses
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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