A method, system, and computer program product are provided for managing email disk usage based on user specified conditions. An incoming email for a user is scanned for email expressions. A determination is made as to whether one of the email expressions matches one of a number of listed expressions forming a matched expression. Responsive to a presence of a matched expression, a determination is made as to whether a first threshold associated with the matched expression is met or exceeded. Responsive to the first threshold being met or exceeded, a notification is sent to the user of the first threshold being met.