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Mail Exchanger (MX) Record Lookup
x402
Mail Exchanger (MX) Record Lookup is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Returns the MX hosts and their delivery priority values for a given domain by querying public DNS records.
Price / call$0.01
Success—
StatusUnknown
How this service works
Mail exchanger lookup for Email operations: Return the domain MX hosts and their delivery priorities. DNS data only; does not send email or verify that an inbox exists.
Output
A list of MX (mail exchanger) hostnames associated with the queried domain, each paired with its numeric delivery priority value. Lower priority numbers indicate preferred mail servers. This is raw DNS data only — it does not confirm inbox existence or attempt email delivery.
Example use cases
Identify email provider from domain
“Can you look up the MX records for notion.so? I want to know which email provider they use — like whether it's Google Workspace, Microsoft 365, or something else.”
Pre-send mail routing check
“Before we send bulk email to users at acme.com, can you pull the MX records for that domain so I know which mail server to route to and in what priority order?”
Investigate suspicious sender domain
“I got an email from someone at suspiciousdomain.xyz — can you check what MX hosts are configured for that domain so I can see if it has a real mail setup?”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/demand-domain-mx-records-email-operations?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, authoritative DNS MX record data for a domain — such as identifying an organization's email provider, routing SMTP traffic, pre-validating an email domain before outreach, or investigating email infrastructure. Prefer this over full email validation services when you only need DNS-level mail exchanger data without inbox existence checks or deliverability scoring.
Side effects
- Domain does not exist or has no MX records — returns empty or null result
- Invalid domain format supplied — may return validation error
- DNS lookup timeout or transient resolution failure
- Domain exists but has no MX record configured (relies on A record fallback not reflected here)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | Public DNS domain, e.g. example.com. |
Tags
x402
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