EMAIL_REGEX
Email regular expression used by default to match an email. It matches emails according to the W3C HTML5 spec (see: https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address).
Email regular expression used by default to match an email. It matches emails according to the W3C HTML5 spec (see: https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address).