Customize Jetpack Blog Subscription Email

I have WP on my own website: http://www.mgcre8v.com/blog. I have the widget: Blog Subscriptions (Jetpack) installed and working. My question is, is there a way to customize the email that is sent to the user? I’d like to update the text and change the look of it with my own logo, maybe some color changes.

I would also like to be able to see how many subscribers there are without having to log into the main WordPress site. That said, is there a better plugin or widget I should use?