Email Syntax Validator API

What it does

Email Syntax Validator checks whether an email address is valid at the syntax level. Send an email string and get back a response with the original email, the parsed local part, the domain, and a boolean valid flag.

Use it when you need fast client-side or server-side format checks before you store an address, queue a signup flow, or pass data to a downstream messaging system. Because this endpoint validates syntax only, it does not perform DNS or mailbox verification, so it stays instant and predictable for high-volume validation steps.

The response is simple to consume: if valid is true, the address matches email formatting rules; if it is false, you can reject it or prompt the user to correct the input. The local and domain fields are useful when you want to inspect or log the parts of the address separately.