Email-syntax-verify is a module for performing syntactic verification of email addresses, local parts of an email and email domains.
Run npm i email-syntax-verify in your package directory.
const verifier = require("email-syntax-verify");
verifier.verifyEmail("someemail@example.com");
//The email is valid
const verifier = require("email-syntax-verify");
verifier.verifyLocalPart("someemail");
//The local part is valid
const verifier = require("email-syntax-verify");
verifier.verifyDomain("example.com");
//The domain is valid