Validate email address
npm install is-valid-email
var isValidEmail = require('is-valid-email');
isValidEmail('foo.bar-5@qux.com') // true
isValidEmail('foo+bar-5@qux.com') // true
isValidEmail('foo&bar-5@qux.com') // true
isValidEmail('foo...bar-5@qux.com') // false
isValidEmail('fooqux.com') // false
RFC 2822 section 3.4.1 Addr-spec specification
MIT