# is-email-hosted-by-mailbox-org-bulk

> is-email-hosted-by-mailbox-org-bulk is a paid API for AI agents from email.intel.rallylive.ca, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-24).

Checks up to 20 domains in a single call to determine if each domain's email is hosted by Mailbox.org, returning results in input order with per-item error info and a failure count.

## Facts

- Endpoint: GET https://email.intel.rallylive.ca/bulk/email/hosted-by/mailbox-org?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/is-email-hosted-by-mailbox-org-bulk-efa7fb9c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bVF8rTESDLXwrivRe8lAk

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-mailbox-org-bulk-efa7fb9c
```

Example prompt: Can you check these 15 domains — acme.com, globalfirm.io, brightpath.org, and 12 others — and tell me which ones have their email hosted by Mailbox.org? I need results in the same order I gave them.

## When to prefer this

Use this endpoint when you have a list of 2–20 domains and need to check Mailbox.org hosting status for all of them in a single paid call rather than making multiple single-domain requests. It is more cost-efficient and faster than looping the single endpoint, and it returns results in input order with structured per-item error reporting.

## Known failure modes

- Input list exceeds 20 domains — batch size limit enforced
- Invalid or malformed domain names cause per-item errors with error field populated
- DNS resolution failures for specific domains increment failure count but don't abort the batch
- Network timeout on MX/SPF lookup returns per-item error
- Payment failure (x402) prevents the call from being processed

## How this service works

Bulk is email hosted by mailbox org: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

## Output

An ordered array of per-domain results (matching input order), each containing a boolean indicating whether that domain's email is hosted by Mailbox.org, a per-item error field if the check failed, and an overall failure count for the batch.

## 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-mailbox-org-bulk-efa7fb9c/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)