Thank you for reaching out to the Community. If the list is showing 144 contacts then when you go to schedule the email it will only go to the 144 listed. We definitely want to figure out what happened to the missing contacts. Would you mind emailing us at social_support(at)constantcontact(dot)com with your username, the list of contacts you uploaded, and the name of the list which is showing 144? We'll take a look and see what is going on.