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Old Colony Web Email Batch Preflight (11–50 Addresses)
x402
Old Colony Web Email Batch Preflight (11–50 Addresses) is a paid API for AI agents from api.oldcolonyweb.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-30).
Validates a batch of 11–50 email addresses for syntax correctness, DNS resolution, MX record presence, and disposable-domain detection for $0.005 per batch.
Price / call$0.005
Success—
StatusUnknown
How this service works
Email preflight 11–50 addresses for $0.005 per batch. Ordered syntax/DNS/MX/disposable evidence and explicit unknowns. Addresses processed, not intentionally logged in routine telemetry. No mailbox, deliverability or consent guarantee. Bazaar response example shows the first result only; actual response includes all items.
Output
An ordered array of preflight results for each submitted email address, including syntax validity, DNS resolution status, MX record presence, disposable-domain classification, and any explicit unknown indicators. Results appear in the same order as the input list. No mailbox-level ping or deliverability guarantee is provided.
Example use cases
Pre-import CRM email hygiene
“I have a list of 30 new leads to import into our CRM — can you run them through email preflight and flag any that have bad syntax, no MX records, or are from throwaway email services?”
Newsletter signup disposable filter
“We got 40 new newsletter signups overnight. Can you check all of them for disposable email addresses and DNS issues so I can remove the junk before sending the welcome email?”
Sales outreach list validation
“Before we kick off the cold outreach campaign, can you validate these 18 prospect email addresses — syntax, DNS, MX records, and disposable domain checks — so we're not wasting sends on bad contacts?”
Technical details
Endpoint
POSThttps://api.oldcolonyweb.com/v1/email/batch/50?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to validate a mid-size batch of 11–50 email addresses in a single call at low cost ($0.005). It is more efficient than the 2–10 address tier for medium lists and covers syntax, DNS, MX, and disposable-domain checks in one pass. Prefer this over single-address validation when processing form signups, CRM imports, or outreach lists in the 11–50 range. Not suitable for mailbox-level ping verification or consent checking.
Side effects
- Fewer than 11 or more than 50 emails submitted — request rejected with validation error
- Malformed email strings exceeding 320 characters — item flagged or batch rejected
- DNS lookup timeouts causing unknown status for some addresses
- Disposable-domain list may not cover all providers, leading to false negatives
- Network or service errors returning non-200 responses
- Payment failure via x402 protocol preventing request from being processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| emails | array |
Tags
x402
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