Thank you for reaching out to us! That is a great question. So our system is a bit more complex than that. With our system, in order to schedule an email to someone, they do need to be on a contact list. You can create an email list for each individual contact, but it might be a bit time-consuming. One option we do have is QuickSend, which allows you to select a contact and send an already sent campaign to them immediately. You can click here to read more about the QuickSend option. Please let us know if you have any other questions.