To resend your confirmation email, login to your EventSprout account. From there, each of your upcoming events will have the option to resend your confirmation email.
Also, if you haven't already, we encourage you to search your inbox for any past emails from EventSprout. Sometimes, our emails end up in the SPAM (or Promotions folder for those with gmail), therefore we recommend looking there. This is the quickest way to find your original confirmation email.