A method for controlling a postage metering system includes a mailer defining a first set of parameters for which the generation of postage evidence is authorized to be dispensed from the mailer's meter account. When a request for postage evidence is received, the request includes a second set of postage parameters. The requested postage evidence is generated only when each of the postage parameters in the second set matches one of the parameters in the first set. Alternatively, the first set of parameters defines parameters for which the generation of postage evidence is not authorized to be dispensed from the mailer's account, and the requested postage evidence will be generated only when none of the postage parameters in the second set matches one of the parameters in the first set.