# Mail Exchanger (MX) Lookup for Sales Operations

> Mail Exchanger (MX) Lookup for Sales Operations 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).

Performs a DNS MX record lookup for a given domain and returns its mail exchanger hosts with their delivery priority values.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-domain-mx-records-sales-operations?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mail-exchanger-mx-lookup-for-sales-operations-be6b58ce
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Qpw235s6syBLGBKO-y_yt

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mail-exchanger-mx-lookup-for-sales-operations-be6b58ce -d '<json body>'
```

Example prompt: What are the MX records and their delivery priorities for salesforce.com?

## When to prefer this

Choose this endpoint when you need raw DNS MX record data for a domain as part of sales enrichment, email deliverability pre-checks, or infrastructure reconnaissance. Prefer this over full email verification services when you only need routing/infrastructure data and not inbox-level validation. Ideal for lightweight, low-cost ($0.01) domain mail server lookups at scale during sales prospecting workflows.

## Known failure modes

- Domain does not exist or has no MX records — returns empty list or DNS NXDOMAIN error
- Invalid domain format supplied — returns validation error
- DNS resolution timeout — transient failure, retry recommended
- Domain has MX records delegated to a third-party provider that may not reflect the company's primary mail infrastructure

## How this service works

Mail exchanger lookup for Sales operations: Return the domain MX hosts and their delivery priorities. DNS data only; does not send email or verify that an inbox exists.

## Output

Returns a list of MX (mail exchanger) host records associated with the queried domain, each paired with its delivery priority integer. Higher priority values indicate lower preference in DNS convention. No email is sent and inbox existence is not verified — this is pure DNS data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "default": "example.com",
   "description": "Public DNS domain, e.g. example.com."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mail-exchanger-mx-lookup-for-sales-operations-be6b58ce/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)