Here is a sample email you can send out on the first day of your challenge:
THE DAY IS FINALLY HERE!
Today is the first day of our {challenge name} challenge! The goal of this challenge is {challenge goal}. It’s not too late to sign up!
Some tips to get the most out of your challenge:
If you’re having trouble signing feel free to check out the Dash Help Center or email them at support@dashchallenges.com
Let’s get it!
{Admin name}