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Bulk SparkPost Email Hosting Checker
x402
Bulk SparkPost Email Hosting Checker is a paid API for AI agents from email.intel.rallylive.ca, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-18).
Checks up to 20 domains in one concurrent batch to determine whether each domain's email is hosted by SparkPost, returning results in input order with per-item error fields and a failure count.
Price / call$0.1
Success—
StatusUnknown
How this service works
Bulk is email hosted by sparkpost: 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 list of results matching the input domain order, where each item contains a boolean indicating whether the domain's email is hosted by SparkPost, a per-item error field if the lookup failed, and an overall failure count for the batch.
Example use cases
Sales prospecting email provider audit
“I have a list of 15 prospect company domains — can you batch-check all of them and tell me which ones are using SparkPost to host their email, so I know which prospects to flag for our SparkPost-specific outreach campaign?”
Competitor email infrastructure analysis
“Here are 18 domains from companies in our industry: acme.com, globex.com, initech.com, and 15 more — check all of them in one shot and tell me which are on SparkPost, which aren't, and flag any that had lookup errors.”
Email vendor migration verification
“We just migrated several client domains to SparkPost — can you run a bulk check on these 12 domains and confirm which ones are now correctly showing SparkPost as their email host, and highlight any that still haven't switched over?”
Technical details
Endpoint
GEThttps://email.intel.rallylive.ca/bulk/email/hosted-by/sparkpost?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have a list of 2–20 domains and need to check SparkPost hosting for all of them efficiently in a single call rather than making separate single-domain requests. It is more cost-effective and faster than looping over the single-domain endpoint, and returns results in the same order as input with granular per-item error reporting, making it ideal for pipeline enrichment or audit workflows.
Side effects
- More than 20 domains submitted — batch size limit exceeded
- DNS lookup failure for one or more domains — per-item error field populated
- Invalid domain format — per-item error returned
- Network timeout on concurrent MX resolution — failure count incremented
- Payment not completed (x402) — entire batch rejected before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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