validate email without + and .@ but with +soda_test

(function(){
const emailField = document.querySelector('.' + self.identifier + ' [tabindex] INPUT[name="email"]');
        const submitButton = document.querySelector('.' + self.identifier + ' [tabindex] INPUT[name="submit"]');
        if (emailField) {
            emailField.addEventListener('input', function() {
                setTimeout(function() {
                    const emailFieldValue = emailField.value;
                    const regexpPlus = /\+/;
                    const regexpTest = /\+soda_test/i;
                    const regexpMail = /\.@/;
                    submitButton.style.pointerEvents = 'auto';
                    if (regexpMail.test(emailFieldValue)) {
                        submitButton.style.pointerEvents = 'none';
                    }
                    if (regexpPlus.test(emailFieldValue)) {
                        submitButton.style.pointerEvents = 'none';
                        if(regexpTest.test(emailFieldValue)) {
                            submitButton.style.pointerEvents = 'auto';
                        }
                    }
                }, 150);
            });
        }
}();