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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 alpha-stream.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 presence.
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://alpha-stream.agentdiet.dev/v1/mx-check)
Output
Returns a structured object indicating email syntax validity, whether the domain uses a known disposable/burner email provider, whether the address is a role account (e.g. admin@, info@), and the live DNS status of MX, SPF, and DMARC records for the email's domain.
Example use cases
Screening user signups for fake emails
“Before we activate this new account, can you verify that the email address they signed up with — freestuff2024@mailinator.com — is legitimate and not a throwaway or burner address?”
B2B lead list email hygiene
“I have a sales lead with the email contact@acmecorp.io — can you check if it's a real deliverable address, whether it's a role account, and whether the domain has proper MX and DMARC records set up?”
Pre-send deliverability audit
“Before I launch this email campaign, can you verify that newsletter@bigbrand.com has valid MX records and passes SPF and DMARC checks so we don't waste sends on undeliverable addresses?”
Technical details
Endpoint
POSThttps://alpha-stream.agentdiet.dev/v1/mx-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single API call that combines email syntax checking, disposable/burner provider detection, role account identification, and live DNS validation (MX, SPF, DMARC) in one response. It is particularly well-suited for agent workflows that need to screen user-submitted emails at signup, validate B2B lead lists, or audit outbound email infrastructure before sending campaigns — especially when operating in x402 micropayment-enabled agentic pipelines.
Side effects
- Missing or malformed email input returns a validation error
- DNS lookup timeouts may cause MX/SPF/DMARC checks to fail or return inconclusive results
- Newly registered domains may have no DNS records yet, returning false negatives
- Private or internal domains may not have publicly resolvable DNS records
- Payment required (HTTP 402) if x402 micropayment is not provided or fails
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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