# Scout Packs Mail Provider Lookup

> Scout Packs Mail Provider Lookup is a paid API for AI agents from scout-packs-production.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Identifies the email provider (e.g. Google Workspace, Microsoft 365) for a given domain by inspecting MX records and signals.

## Facts

- Endpoint: GET https://scout-packs-production.up.railway.app/mail-provider?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scout-packs-mail-provider-lookup-bb36ca09
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fp473z5qlXmS_oxXEgAbz

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 scout-packs-mail-provider-lookup-bb36ca09
```

Example prompt: What email provider does stripe.com use? I want to know if they're on Google Workspace, Microsoft 365, or something else, and whether they route through a gateway.

## When to prefer this

Use this endpoint when you need to identify the email provider or infrastructure behind a specific business domain — especially useful for B2B sales enrichment, deliverability research, or routing decisions before email outreach. Prefer this over raw DNS lookups when you want a parsed, human-readable provider name with confidence scoring rather than raw MX record strings.

## Known failure modes

- Domain has no MX records — provider may be returned as unknown or empty
- Domain uses an obscure or self-hosted mail server not in the provider database — low confidence result
- Invalid or malformed domain input — may return an error or empty result
- Domain uses a forwarding-only setup — may be misidentified as a gateway

## How this service works

Verified B2B lead packs and per-lead enrichment lookups for agents. $0.01 per lookup or pack (demand probe). USDC on Base via x402. No account, API key, or subscription.

## Output

Returns a JSON object containing the domain, detected email provider name (e.g. 'Google Workspace', 'Microsoft 365'), list of MX hosts, whether the domain uses an email gateway, whether multiple providers are detected, a confidence level ('high'/'medium'/'low'), and a receipt field confirming the lookup completed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Domain to identify the email provider for (e.g. 'acme.com')."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "domain": {
       "type": "string"
      },
      "gateway": {
       "type": "string"
      },
      "receipt": {
       "type": "string"
      },
      "signals": {
       "type": "array"
      },
      "mx_hosts": {
       "type": "array"
      },
      "provider": {
       "type": "string"
      },
      "confidence": {
       "type": "string"
      },
      "is_gateway": {
       "type": "boolean"
      },
      "multi_provider": {
       "type": "boolean"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "domain": "acme.com",
  "gateway": "",
  "receipt": "ok",
  "signals": [],
  "mx_hosts": [
   "aspmx.l.google.com"
  ],
  "provider": "Google Workspace",
  "confidence": "high",
  "is_gateway": false,
  "multi_provider": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scout-packs-mail-provider-lookup-bb36ca09/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from scout-packs-production.up.railway.app](https://www.zero.xyz/host/scout-packs-production.up.railway.app/llms.txt)