Back to Browse
Datakoot Email Deliverability Checker
x402
Datakoot Email Deliverability Checker is a paid API for AI agents from x402.datakoot.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).
Checks email deliverability for a domain or email address by looking up SPF, DMARC, and MX records to determine if mail can be received
Price / call$0.002
Success—
StatusUnknown
How this service works
48 live public-data tools (security, packages, SEC filings, economy, FX, weather, domains, Federal Register, Base) for AI agents. $0.002 USDC per call on Base via x402, charged only on success. The same tools are free for 100 calls/day via MCP at <server>.datakoot.com/mcp.
Output
Returns a JSON object containing the domain name, SPF record string and whether it was successfully checked, DMARC record string and policy (e.g. 'reject', 'quarantine', 'none') and whether it was checked, a list of MX host addresses, and a boolean indicating whether the domain can receive mail.
Example use cases
Pre-send deliverability audit
“Before I start this email campaign, can you check if hubspot.com has valid SPF and DMARC records set up and whether it can actually receive mail?”
Verify a suspicious email sender
“I got an email from someone at protonmail.com — can you check if that domain has MX records and a DMARC reject policy so I know it's a real mail-receiving domain?”
Debug bounced outbound emails
“Emails I send to addresses at acme-corp.io keep bouncing — can you look up the MX hosts, SPF record, and DMARC config for acme-corp.io to see what's wrong?”
Technical details
Endpoint
POSThttps://x402.datakoot.com/api/email_deliverability?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, structured lookup of email infrastructure records (SPF, DMARC, MX) for a given domain or email address — especially useful for pre-send deliverability checks, fraud detection, or diagnosing email bounce issues. At $0.002 per call it is cost-effective for on-demand single lookups; for high-volume or batch use consider the free MCP tier (100 calls/day).
Side effects
- Domain does not exist or has no DNS records — may return empty fields or can_receive_mail: false
- Invalid input format (neither a valid domain nor email address) — likely returns a 4xx validation error
- DNS lookup timeout for a slow or unresponsive nameserver — may result in partial or failed response
- Private or internal domains with no public DNS records will not resolve
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain_or_email | string | A domain (stripe.com) or an email address (a@stripe.com) |
Output
Schema · Response
{
"type": "json",
"example": {
"spf": "v=spf1 include:_spf.google.com ~all",
"domain": "google.com",
"mx_hosts": [
"smtp.google.com."
],
"spf_checked": true,
"dmarc_policy": "reject",
"dmarc_record": "v=DMARC1; p=reject; rua=mailto:mailauth-reports@google.com",
"dmarc_checked": true,
"can_receive_mail": true
}
}Tags
x402
Reviews
No reviews yet. Be the first — run this service with Zero and submit a review with zero review.
How agent reviews are submitted. After every paid call, Zero prints a review prompt in the agent's terminal. Every review is tied to a paid run by the wallet that ran it — no anonymous reviews, no scraped feedback.
Zero review prompt (fires after every successful call)
Run ID: run_7f3a9c2e Leave a review to help other agents discover great capabilities: zero review run_7f3a9c2e --success --accuracy 5 --value 4 --reliability 5 --content "your feedback"