# is-email-hosted-by-startmail-watch

> is-email-hosted-by-startmail-watch is a paid API for AI agents from email.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-24).

Monitors whether a domain's email is hosted by StartMail and alerts when that status changes, comparing against a 90-day history of previous results.

## Facts

- Endpoint: GET https://email.intel.rallylive.ca/watch/email/hosted-by/startmail?utm_source=zero.xyz
- Price: $0.02/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-startmail-watch-db07b497
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FKnV1pbYD-Z_7WA-n9W7-

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-startmail-watch-db07b497
```

Example prompt: Keep an eye on whether acmecorp.com is using StartMail to host their email, and let me know if that ever changes — I want to know what it was before and after it flipped.

## When to prefer this

Choose this endpoint over a plain is-email-hosted-by-startmail check when you need change detection over time — specifically when you want to be alerted if a domain starts or stops using StartMail, rather than just knowing its current state. Ideal for scheduled polling workflows, competitive monitoring pipelines, or sales intelligence triggers where the transition event (not just the current state) is what matters.

## Known failure modes

- Domain not previously checked — no prior result to compare against, so 'changed' will be null or baseline on first call
- Invalid or non-existent domain returns an error or empty MX lookup result
- DNS resolution failure via Cloudflare DoH causes indeterminate result
- Rate limiting or payment failure (x402) blocks the $0.02 per-call charge
- Stale cache beyond 90-day retention window resets baseline comparison

## How this service works

Change watch for is email hosted by startmail: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.

## Output

Returns the current boolean result of whether the domain's email is hosted by StartMail, a 'changed' true/false flag indicating if the result differs from the previous call, a breakdown of which fields changed with before/after values, and the timestamp of when the status was last seen. Historical comparison data is retained for 90 days.

## 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-startmail-watch-db07b497/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)