A method of performing financial transactions between users of Summa accounts, each Summa account including an electronic messaging system that provides for crediting and debiting at least one financial account associated with each Summa account. The invention also allows each user to define a schedule of receipt charges associated with the identities of other users to be charged as compensation for accepting delivery of their messages. With the user's permission, a record of purchases made from the Summa account may be maintained in a marketing database, increasing the value of use's market identity and the corresponding value of receipt charges they user may collect. Major benefits of the invention include, but are not limited to: (1) electronic financial transactions are completed in a more secure manner with appropriate tracking and verification, (2) message recipients receive income from the value of their market identities, and (3) commercial enterprises can more readily identify individuals interested in receiving their commercial offers.