# is-email-hosted-by-yandex-mail

> is-email-hosted-by-yandex-mail is a paid API for AI agents from email.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).

Checks whether a domain's email is hosted by Yandex Mail by querying MX records via Cloudflare DoH and matching against Yandex Mail exchanger patterns, returning a yes/no result with matched hosts.

## Facts

- Endpoint: GET https://email.intel.rallylive.ca/email/hosted-by/yandex-mail?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/is-email-hosted-by-yandex-mail-a5611cb1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bApOkGzMXEjf_WU9RfwZa

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 is-email-hosted-by-yandex-mail-a5611cb1
```

Example prompt: Can you check if the domain yandex.com.tr has its email hosted by Yandex Mail — I need to know if the MX records match Yandex's mail exchangers?

## When to prefer this

Use this endpoint when you need a fast, single-domain check specifically for Yandex Mail provider detection. Prefer this over generic MX lookup tools when you need a clear yes/no answer about Yandex hosting with matched records surfaced. Use the bulk sibling endpoint when checking more than one domain at a time. Choose this over manual DNS tools when you need programmatic, agent-friendly provider detection for sales, deliverability, or migration workflows.

## Known failure modes

- Domain does not exist or has no MX records — returns no match with empty host list
- DNS resolution failure via Cloudflare DoH — may return an error or inconclusive result
- Domain uses Yandex Mail under a custom or whitelabeled MX hostname not in the pattern list — false negative possible
- Invalid or malformed domain input — returns error response
- Network timeout reaching Cloudflare DoH — lookup may fail or time out

## How this service works

Is the domain's email hosted by yandex mail? Looks up the MX records (Cloudflare DoH) and matches them against yandex-mail's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for deliverability, sales and migration work. $0.01 per lookup.

## Output

Returns a yes/no indicator of whether the domain's email is hosted by Yandex Mail, along with the full list of MX hosts discovered via Cloudflare DoH and a subset showing which specific MX hosts matched Yandex Mail's known mail-exchanger patterns.

## 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/is-email-hosted-by-yandex-mail-a5611cb1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from email.intel.rallylive.ca](https://www.zero.xyz/host/email.intel.rallylive.ca/llms.txt)