For promises to be fulfilled, they must meet certain criteria. The five criteria are: offer, acceptance, consideration, capacity and legality (Seaquist, 2012). The offer is at the beginning of the contracting process. The person writing the contract must give the contract to the other person. When the proposal is given to the other person, that person has the right to accept or reject it. If that person rejects the offer, the offer is invalid. Then comes acceptance (Safrath, 1999). Acceptance can come in different forms. It can be done by phone, in person, or in writing. The acceptance must clearly indicate that the person accepting the proposal accepts the buyer's terms. There is also something called the inbox rule. Most states will stick to this, meaning that when someone accepts an offer they put it in their inbox or an email, showing that they accept the offer (Safrath,