you can if one of you ticks the box at the bottom of the message you can reply directly to their email and therefore exchange addresses like you did with me dear
You could always string together a couple of plastic cups and trade e-mails by talking in to one end whilst the person at the other end holds the cup to his/her ear. Apparently this kind of communication is supposed to be highly secure and in my opinion it will be the next biggest thing in 2005.
On a more serious note..........
Does anyone ever take walkie talkies / 2-way radios with them to the slopes? If so, how do they perform and what range radios do you use?