<div class='ewd-uwpm-email-custom-user'>
            <input id='ewd-uwpm-email-user-custom' />
            <div class='ewd-uwpm-clear'></div>
            <button id='ewd-uwpm-email-custom-user' class='button button-primary button-large' ><?php _e("Email custom", 'ultimate-wp-mail'); ?></button>
        </div>


jQuery('#ewd-uwpm-email-custom-user').on('click', function(event) {
        event.preventDefault();
        jQuery('#ewd-uwpm-send-reponse-message').html('Sending email...').removeClass('ewd-uwpm-hidden').css('display', 'block');

        var Email_ID = jQuery('#ewd-uwpm-email-id').val();
        var Email_Title = jQuery('#title').val();
        var Email_Content = jQuery('#ewd-uwpm-visual-builder-area').html();
        var User_ID = jQuery('#ewd-uwpm-email-user-custom').val();

        if (jQuery('.ewd-uwpm-delay-send-toggle').val() == 'Now') {var Send_Time = 'Now';}
        else {var Send_Time = jQuery('#ewd-uwpm-send-datetime').val();}

        var data = 'Email_ID=' + Email_ID + '&Email_Title=' + Email_Title + '&Email_Content=' + encodeURIComponent(Email_Content) + '&User_ID=' + User_ID + '&Send_Time=' + Send_Time + '&action=ewd_uwpm_email_specific_user';
        jQuery.post(ajaxurl, data, function(response) {console.log(response);
            jQuery('#ewd-uwpm-send-reponse-message').html(response);

            setTimeout(function() {
                jQuery('#ewd-uwpm-send-reponse-message').fadeOut(400).addClass('ewd-uwpm-hidden');
            }, 4000);
        });
    });