← Validators
tools by fourzerotwo
Email check
Email syntax, whether the domain accepts mail, disposable and role-account flags.
Email check
Email syntax, whether the domain accepts mail, disposable and role-account flags.
- price
- $0.001 / call
- free tier
- free allowance
- MCP tool
- validators__email
- method
- GET
GET https://fourzerotwo.si/v1/validators/email
| Param | Type | Description |
|---|---|---|
| string |
# unpaid: returns 402 with the price curl -i "https://fourzerotwo.si/v1/validators/email?email=hello%40fourzerotwo.si" # free tier: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/validators/email?email=hello%40fourzerotwo.si"
Use it from an AI agent (MCP)
Add the server once, then ask for this data in plain English. The agent finds the endpoint with search_apis and runs it with call_api.
{
"mcpServers": {
"fourzerotwo": { "type": "http", "url": "https://fourzerotwo.si/mcp" }
}
}
# the call the agent makes call_api {"tool": "validators__email", "arguments": {"email":"[email protected]"}}
More from Validators
- IMEI check digit — Validate an IMEI (length + Luhn) and split TAC, serial and check digit.
- VIN check — VIN format, check digit, WMI and model-year candidates.
- IBAN check — IBAN mod-97 checksum and country length; UK sort code extracted.
- UK phone number — Classify a UK number (mobile, landline, freephone, premium…) and format as E.164.
- UK postcode format — Validate and normalise UK postcode format; split outward/inward codes.
Validation by fourzerotwo.