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Is Email Hosted by Postmark Watch
x402
Is Email Hosted by Postmark 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 2026-10-20).
Monitors whether a domain's email is hosted by Postmark and alerts when that status changes, comparing the current check against the previous result stored for 90 days.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for is email hosted by postmark: 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 Postmark hosting status for the domain, a boolean indicating whether it has changed since the last check (up to 90 days ago), a list of fields that changed with their before and after values, and a timestamp of when the status was last seen.
Example use cases
Competitor email platform migration alert
“Monitor techstartup.io and alert me the moment they switch away from Postmark as their email provider — I want to know what changed and when.”
Sales lead email infrastructure tracking
“I'm targeting domains that use Postmark — watch prospectdomain.com and tell me if its Postmark hosting status changes so I can time my outreach.”
Vendor infrastructure change detection
“We rely on a partner at partnerco.com and need to know if they change their email hosting away from Postmark. Set up a watch and report any changes with before and after details.”
Technical details
Endpoint
GEThttps://email.intel.rallylive.ca/watch/email/hosted-by/postmark?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to detect changes in Postmark email hosting status for a domain over time rather than just a one-time lookup. It is ideal for scheduled monitoring workflows where you want to be alerted only when something changes, avoiding noise from repeated identical checks.
Side effects
- Domain not previously checked — no prior result to compare against, so 'changed' will be false or baseline
- Invalid or unresolvable domain returns an error
- DNS lookup timeouts may cause inconclusive results
- Results older than 90 days are purged, triggering a fresh baseline instead of a diff
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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