# Email Provider Detect

> Email Provider Detect is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Detects whether an email address or domain is hosted on consumer webmail (Gmail, Outlook.com, Yahoo, iCloud, Proton) or business email hosting (Google Workspace, Microsoft 365, Zoho, Proofpoint) using domain and MX record analysis.

## Facts

- Endpoint: GET https://intel.rallylive.ca/email/provider
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-provider-detect-892f35c8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_G3yUPsvSClQVWf6IcFzmX

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 email-provider-detect-892f35c8
```

Example prompt: Can you check whether john@acmecorp.com is hosted on a consumer webmail service like Gmail or Yahoo, or on a business platform like Google Workspace or Microsoft 365?

## When to prefer this

Use this endpoint when you need to classify an email address or domain by its hosting provider type — especially to segment consumer vs. business contacts or choose the right email deliverability strategy. Prefer this over a full email verification endpoint when provider identity (not deliverability status) is the primary concern. It is more specific than a generic DNS lookup because it interprets MX records in the context of known email hosting platforms.

## Known failure modes

- Domain has no MX records — cannot determine mail provider
- Domain does not exist or is unresolvable — DNS lookup failure
- Obscure or self-hosted mail server not matched to a known provider — returns unknown
- Email address syntax is invalid — rejected before lookup
- Rate limiting or network timeout on DNS resolution

## How this service works

Email provider detection for an address or domain: consumer webmail (Gmail, Outlook.com, Yahoo, iCloud, Proton...) versus business hosting (Google Workspace, Microsoft 365, Zoho, Proofpoint...) from the domain and its MX records. Segment contacts and pick the right deliverability playbook. $0.01 per address.

## Output

Returns the detected email provider (e.g. Google Workspace, Microsoft 365, Gmail, Yahoo, Proton Mail, iCloud) and a classification of whether the email is consumer webmail or business-hosted, derived from the domain's MX records and DNS configuration.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/email-provider-detect-892f35c8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)