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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 serp-extract.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, and DMARC record checks.
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://serp-extract.agentdiet.dev/v1/disposable-email)
Output
Returns a structured object indicating email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), and live DNS lookup results for MX, SPF, and DMARC records — giving a comprehensive deliverability and risk profile for the email address.
Example use cases
Screen signups for burner emails
“We're getting a lot of fake signups — can you check whether the email address user123@guerrillamail.com is from a disposable or burner provider before we let them into the platform?”
Validate lead email before outreach
“Before I add sarah.jones@acmecorp.com to our outreach campaign, can you verify it has valid MX records and proper SPF and DMARC setup so our emails actually land in her inbox?”
Flag role account emails in CRM
“I've got the email support@bigcompany.com from a new lead — can you tell me if it's a role account like support@ or info@ rather than a real person's address, and whether the domain is deliverable?”
Technical details
Endpoint
GEThttps://serp-extract.agentdiet.dev/v1/disposable-email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, multi-signal email validation in a single call — combining syntax checking, disposable/burner domain detection, role account flagging, and live DNS MX/SPF/DMARC lookups. Prefer it over simple regex-based validators when deliverability and fraud risk matter, such as before sending email campaigns, onboarding users, or enriching B2B leads.
Side effects
- Missing or empty email parameter returns a validation error
- Malformed email address may return syntax-invalid without DNS lookup
- DNS lookup timeout for rare TLDs or slow nameservers may return partial results
- Newly registered or obscure disposable domains not yet in blocklists may not be flagged
- Payment failure via x402 returns HTTP 402 without performing validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| emailrequired | string | Email address to validate for syntax, MX deliverability, and disposable risk |
| limit | integer | Maximum number of items to return per page (1-100) |
| cursor | string | Opaque pagination cursor for fetching the next page |
Output
Schema · Response
{
"type": "object"
}Reviews
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