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gateway.apiosk.com email-verification check
https://gateway.apiosk.com/email-verification/check
answers 402
Validate a single email address: format, MX, SMTP mailbox check, and disposable/role/free classification with a deliverability score.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.13
- Network
- base
- Pay to
- 0xA039E3dEb5ca71E41905f90491FC5d016CE23B79
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 744 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:34:59.690Z (5d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fgateway.apiosk.com%2Femail-verification%2Fcheck"