Email verification / email validation / bounce check before sending: verify one email address: syntax, MX records, mail provider (Google Workspace, Microsoft 365, ...), catch-all detection, role/free/disposable flags and a live SMTP RCPT check. Returns deliverable, undeliverable, catch_all or no_mx. Inconclusive results (greylisting) return 503 and are not charged.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.003000 USDC | 0xB442...4e83 |
| Arbitrum One | exact | $0.003000 USDC | 0xB442...4e83 |