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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 2026-10-21).
Validates an email address for syntax correctness, disposable/burner provider 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://mesh.agentdiet.dev/v1/email)
Output
Returns a structured object indicating whether the email passes syntax validation, whether the domain is associated with a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), and the live DNS status of MX, SPF, and DMARC records for the email domain.
Example use cases
Screening sign-up emails for fake accounts
“Before I approve this new user registration, can you verify that the email they gave me — free2use@mailinator.com — is real and not from a throwaway or disposable provider?”
Pre-send deliverability check for outreach
“I'm about to send a cold outreach email to ceo@startupxyz.io — can you confirm the domain actually has MX records set up and that SPF and DMARC are properly configured so my message won't bounce?”
CRM lead quality validation
“We just imported a batch of leads and I want to audit one of them: check if sales@bigcorp.com is a role account and whether the domain passes DNS mail authentication checks before we spend time on it.”
Technical details
Endpoint
GEThttps://mesh.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time check of an email address covering both format validation AND live DNS deliverability signals (MX, SPF, DMARC) in a single call, particularly within an autonomous agent workflow that supports HTTP 402 micropayments. It is especially valuable for filtering disposable/burner emails and role accounts before CRM ingestion, user registration, or outreach campaigns.
Side effects
- Missing or malformed email parameter returns a validation error
- DNS lookup timeouts may cause MX/SPF/DMARC checks to fail for slow-responding nameservers
- Newly registered domains may not yet have propagated DNS records, leading to false negatives
- Private or internal domains (e.g. corporate intranets) may not have publicly resolvable DNS
- Payment failure via x402 may block the request if USDC balance is insufficient
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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