Webinar registration page and email customization

Is there a way to customize the webinar registration page and emails that are sent, beyond the options that are provided in the webinar setup options? 

I've seen some companies come out with some good looking registration emails for their webinars that are also hosted on G2W, to reflect their branding and style. Is there some integration option that allows for this? Customization in G2W is limited and does not appear to work properly. The links for the feature image and logo uploads appear to be reversed. You need to reverse them in order for the images to appear in the right place in the registration email. Also, the registration page does not display properly in preview mode.... the logo appears on the right, mid-page, and then only when you have 'tricked the system' by alternating where you upload the event feature and logo images in the branding and color section