An advertising executive recently described the many ways that e-mail helps her An do her job. First of all, of course. she uses e-mail for communicating with her employees, clients, and business partners. E-mail even allows her to serid samples of photographs or illustrations to a client, just by attaching them to an e-mail message. In addition, her employees no longer have to do all of their work in the office. They work at home and send their work to her attached to an e-mail message. And when the advertising company wants to contact a large number of clients, a single e-mail message is sent to them all with the click of a mouse.