Email domain verification API: syntax check plus live mail-server (MX) lookup for any address, returning sorted mail hosts and a deliverable flag, as JSON. Flags dead domains before you send. Mailbox existence is not probed; nothing is stored.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.003000 USDC | 0x8503...9432 |