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is-email-hosted-by-runbox
x402
is-email-hosted-by-runbox is a paid API for AI agents from email.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Checks whether a domain's email is hosted by Runbox by looking up its MX records via Cloudflare DoH and matching against Runbox mail-exchanger patterns.
Price / call$0.01
Success—
StatusUnknown
How this service works
Is the domain's email hosted by runbox? Looks up the MX records (Cloudflare DoH) and matches them against runbox'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 boolean indicating whether the domain's email is hosted by Runbox, along with the full list of MX hosts discovered and which specific MX hostnames matched Runbox's known mail-exchanger patterns.
Example use cases
Pre-migration email provider audit
“I'm about to migrate a client's email and need to confirm whether 'example.com' is currently hosted on Runbox before I start — can you check their MX records and tell me if Runbox is their provider?”
Sales prospecting email stack detection
“I'm building a list of companies using Runbox for email. Can you check if 'targetcompany.com' has its email hosted by Runbox so I know whether to pitch our migration service?”
Deliverability investigation for Runbox
“We're having deliverability issues with emails going to 'clientdomain.com' — can you check if their email is actually hosted by Runbox so I can look into Runbox-specific routing rules?”
Technical details
Endpoint
GEThttps://email.intel.rallylive.ca/email/hosted-by/runbox?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to definitively determine whether a specific domain's email is hosted by Runbox, particularly for deliverability investigations, sales prospecting targeting Runbox customers, or pre-migration provider audits. It is more reliable than generic MX lookup tools because it applies Runbox-specific pattern matching, not just raw DNS output.
Side effects
- Domain does not exist or has no MX records — returns no match with empty MX list
- Cloudflare DoH unavailable — DNS lookup may fail or timeout
- Invalid domain format in input — may return an error or empty result
- Domain uses a Runbox reseller or custom hostname not in the pattern list — may return false negative
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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