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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 workflows.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-28).
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://workflows.agentdiet.dev/v1/spf-dmarc-auditor)
Output
Returns a structured object indicating email syntax validity, whether the provider is a known disposable/burner service, whether the address is a role account (e.g. info@, support@), and the live DNS lookup results for MX records (existence and values), SPF record (presence and policy), and DMARC record (presence and policy), giving a full deliverability and anti-spoofing picture for the email domain.
Example use cases
Screen sign-up emails for fakes
“Before we add this user to our system, can you verify that signup@tempmail.io is a legitimate email — check if it's a disposable or burner address, whether the domain has working MX records, and whether SPF and DMARC are configured?”
Pre-send deliverability audit for outreach
“I'm about to send a cold outreach campaign — can you check whether cto@startupxyz.com is deliverable, has real MX records, and the domain has SPF and DMARC properly set up so our emails won't bounce or land in spam?”
Validate lead contact before CRM import
“We've got a lead with email contact@bigclient.com — can you verify it's syntactically valid, not a role or throwaway account, and that the domain's DNS is correctly set up with MX, SPF, and DMARC records before we add them to our CRM?”
Technical details
Endpoint
POSThttps://workflows.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call email validation that combines syntax checking, disposable provider detection, role account flagging, and live DNS MX/SPF/DMARC auditing — especially useful for B2B lead enrichment pipelines, SaaS sign-up flows, or email outreach pre-screening where deliverability and anti-spoofing compliance all matter. Prefer it over simple syntax-only validators or domain-only DNS checkers when you need the full picture in one call.
Side effects
- Invalid or malformed email input returns a syntax error
- DNS timeout or unreachable nameserver may result in incomplete MX/SPF/DMARC results
- Newly registered domains may not yet have DNS records populated
- Very large or enterprise domains with complex DNS setups may produce partial results
- Missing required 'email' field returns a validation error
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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