We don't require a credit card for the trial- we want you to try out DPD without worrying about being charged. We will notify you by email before your trial expires. If you decide not to supply a credit card during the trial, your account will expire after 30 days.
No Contracts, Pay as You Go
DPD is a pay-as-you-go service and you can always change plans or cancel at any time by clicking on the "Profile" link on your dashboard and visiting the Subscription Manager.