A method includes associating an e-mail address with a plurality of telephone numbers; associating one of the telephone numbers with a one number service (108); allowing telephone calls to the one of the telephone numbers by selecting the e-mail address. In some embodiments, the allowing telephone calls comprises calling a programmed caller number and calling to a called party number associated with the e-mail address. In some embodiments, a called party and a calling party are subscribers to a one-number service (108).