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is-email-hosted-by-mailbox-org
x402
is-email-hosted-by-mailbox-org 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 Mailbox.org by querying MX records via Cloudflare DoH and matching against Mailbox.org's mail-exchanger patterns, returning yes/no plus matched hosts.
Price / call$0.01
Success—
StatusUnknown
How this service works
Is the domain's email hosted by mailbox org? Looks up the MX records (Cloudflare DoH) and matches them against mailbox-org'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 Mailbox.org, the full list of MX hosts retrieved via Cloudflare DoH, and which specific MX hosts matched Mailbox.org's known mail-exchanger patterns.
Example use cases
Sales prospecting email provider detection
“Before I reach out to startups on my list, can you check if techventures.io is using Mailbox.org for their email? I want to tailor my pitch for privacy-focused email users.”
Email migration verification
“We just migrated clientdomain.de to Mailbox.org — can you confirm the MX records are now pointing to Mailbox.org and the switch is complete?”
Competitor intelligence on email stack
“I'm researching which European SaaS companies use Mailbox.org. Can you check if datenschutz-gmbh.de is hosted by Mailbox.org and show me the MX hosts that matched?”
Technical details
Endpoint
GEThttps://email.intel.rallylive.ca/email/hosted-by/mailbox-org?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, single-domain check specifically for Mailbox.org hosting detection, especially for sales intelligence, deliverability auditing, or migration verification workflows. Prefer the bulk sibling endpoint when checking many domains at once. Choose this over generic DNS tools when you need the provider-specific pattern matching logic built in rather than raw MX record lookups.
Side effects
- Domain does not exist or has no MX records — returns no match with empty MX list
- Cloudflare DoH lookup timeout or failure — DNS resolution error
- Domain input missing or malformed — request validation error
- Mailbox.org MX pattern changes not yet reflected — potential false negative
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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