# Is Email Hosted by IONOS Mail

> Is Email Hosted by IONOS 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 IONOS Mail by looking up its MX records via Cloudflare DoH and matching against IONOS mail-exchanger patterns.

## Facts

- Endpoint: GET https://email.intel.rallylive.ca/email/hosted-by/ionos-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-ionos-mail-d43f4c94
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DeTQWBeZXFAgL3reQJRfk

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-ionos-mail-d43f4c94
```

Example prompt: Can you check if the domain acme-corp.com has its email hosted by IONOS Mail — I need to know before reaching out about migrating their email service.

## When to prefer this

Use this endpoint when you need to programmatically detect whether a specific domain's email is hosted by IONOS Mail, especially for sales intelligence, deliverability analysis, or pre-migration audits. It is purpose-built for IONOS detection using live MX lookups via Cloudflare DoH, making it more reliable than static provider lists. Choose this over generic MX lookup tools when you specifically need IONOS provider matching logic already applied.

## Known failure modes

- Domain does not exist or has no MX records — returns no match with empty MX list
- DNS lookup timeout via Cloudflare DoH — returns error or no result
- Invalid domain format provided — may return error or empty result
- IONOS MX pattern not recognized if IONOS updates their infrastructure

## How this service works

Is the domain's email hosted by ionos mail? Looks up the MX records (Cloudflare DoH) and matches them against ionos-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 flag indicating whether the domain's email is hosted by IONOS Mail, the list of MX hosts found via Cloudflare DoH, and which of those MX hosts matched IONOS 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-ionos-mail-d43f4c94/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)