Yes, the times they are a 'changin. Wireless access . Today you have to be in touch as much as possible. Not so that people can reach you necessarily, but so you can reach them when it is convenient for you. Sending e-mail is vital.
Some cell phones have the ability to send and receive e-mail also.
Sprint notably has some good offerings in this area. I can receive and then reply to e-mail from the gate before getting on a plane. I can also check out my favorite Web sites for updates as I surf the Web. Today's road warrior salesperson who wants to get that extra advantage is using wireless e-mail and Web surfing. Get one today to increase your productivity.