Email Validation API

Verify email addresses in real time with a fast REST API. Check syntax, domain and MX records, and catch disposable, role-based and mistyped emails.

validateemail.io is an email validation API that checks any address in milliseconds with one call. Every request runs a full pipeline and returns a single verdict, a confidence score, and the result of each individual check, so you decide how strict to be. Standards-based parsing catches malformed addresses, illegal characters, bad dots and over-long parts. Live DNS lookups confirm the domain is registered and resolving, so made-up and mistyped domains are rejected instantly.