The term phone blast (or call blast) is used to describe a recorded voice message sent to a group of phone numbers using an automated system. A person or company can create a list of phone numbers and use a phone blast system to quickly deliver important messages to those phones. This eliminates the need to manually call multiple people and repeat the same message over and over. A phone blast system can also be used in place of a traditional phone tree, as it is a simpler and more reliable solution for sending an important message.