Kids Email is free for the first 30 days. The 30 days is a trial period. You are NOT required to pay at anytime for the trial period. You are not required to keep the account. Automatic cancellation of account will occur one month after expiration of trial if no payment is made to continue service.
If you decide to keep your subscription to Kids Email, you may choose between a monthly, or yearly subscription (best deal). Visit our pricing page for details: http://www.kidsemail.org/pricing.php