Patent ID: 8244811

Claim:
A method for creating a catalog for use with at least one computer system that manages a plurality of email messages, the method comprising: creating an extender catalog that includes an index of the plurality of email messages and a plurality of display identifiers, each display identifier identifies an entity, wherein the extender catalog correlates each of at least some of the plurality of display identifiers to multiple corresponding email addresses, wherein the extender catalog includes a user interface that enables the display identifiers to be displayed to a user and that enables the extender catalog to be searched based upon at least some information other than the display identifiers, and wherein the computer system is an email system having a global address catalog (GAC); and providing an extension system that interfaces with the email system and manages a first subset of the plurality of email messages, wherein the extender catalog includes at least some information that is different than information in the global address catalog (GAC).