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Cheap Utilities Email Syntax Validator
x402
Cheap Utilities Email Syntax Validator is a paid API for AI agents from cheap-utilities.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).
Validates email address syntax, detects role accounts (info@, admin@), and identifies known throwaway/disposable domains — no DNS lookup or message sending involved.
Price / call$0.02
Success—
StatusUnknown
How this service works
Check email address syntax, role accounts (info@, admin@) and known throwaway domains. No DNS lookup, nothing sent.
Output
Returns a JSON object with: a verdict (e.g. 'invalid', 'risky', 'ok'), a normalized form of the email, the local part and domain split out, boolean flags for roleAccount and disposableDomain, an array of reasons explaining the verdict, a human-readable summary, an asOf timestamp, a source label, a degraded flag indicating whether the check ran at full capacity, a notChecked array listing skipped checks, and a disclaimer.
Example use cases
Signup form email quality gate
“Before we accept this user registration, check if 'noreply@guerrillamail.com' is a real email or a throwaway — and flag it if it's a role account like noreply@ or admin@.”
Bulk lead list pre-screening
“I have a sales lead with email 'support@yopmail.com' — can you validate the syntax and tell me if it's a disposable domain or a role account before we add it to the CRM?”
Catching malformed email inputs
“A user submitted 'john..doe@@example..com' as their email address — is that syntactically valid, and what's wrong with it?”
Technical details
Endpoint
GEThttps://cheap-utilities.x402tookit.com/email-syntax?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, privacy-safe, offline-style email check that covers syntax correctness, role account detection, and disposable domain flagging without triggering DNS queries or sending any messages. Ideal for pre-filtering form submissions, lead lists, or user registrations where MX validation is unnecessary or undesirable. Prefer alternatives if you need full deliverability verification including DNS/MX record checks.
Side effects
- Missing email query parameter returns an error
- Malformed query string may yield a parse error
- Service unavailability returns an HTTP 5xx
- Disposable domain list may not include very new or obscure providers, causing false negatives
- Only syntax and list-based checks are performed — DNS/MX validity is explicitly not checked
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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