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Check blacklist emails

Check whether emails are blacklisted directly or via their domains.

POST/api/blacklist/check
HTTP referenceScope session (admin)Updated September 27, 2026

This page documents the canonical HTTP contract for this endpoint.

Requires an authenticated user session with user_admin; developer API keys are blocked. Unknown JSON fields are ignored. This is a read-only lookup and does not invoke a paid provider.

Body parameters

  • emailsrequired

    array<string>

    Strings to check (maximum 1,000). Values are trimmed and lowercased before exact email and domain matching; the route does not validate each value as an email address.

Errors

StatusMeaning
400Too many emails (max 1000).
401Missing or invalid user session.
403Developer API keys are blocked; an authenticated user_admin session is required.
403Authenticated user lacks user_admin permission.
422Invalid or missing emails array.

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