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[Ralphv1234]

You can send emails from friends home or on any computer away from home. Follow These Intructions.
Type: www.aol.com or www.yahoo.com or www.comcast.net. Then Sign in by typing your user name and password in the sign in box, your in busienss now. You can type in search engine box, or by clicking in to Internet Explorer and then type in search engine. Just remember to log out of your ISP before leaving a computer you worked on.
tiger

[VladTheImpaler1990]

You can, you can also use wake on lan and then you can access you computer and send it from you computer with our being on your computer but you friends.

[mavigozler]

Of course if you use one of the popular free email accounts (Google mail/Gmail, Hotmail, Yahoo being the typical examples), none of this applies. You just log in through the web form interface and write and send and read mail.
With Gmail, you get POP3/SMTP service at no cost as well, which means you can configure an email client to send/receive mail on your friend's computer. But I wouldn't do that since you are more than likely to give your friend the ability to access your mail account. Also when using your friend's computer, don't set any username/password combinations whether with mail or any other account to be remembered (don't use the permanent cookies or persistence features), or your friend may use that too. To be on the safe side, when bidding adieu from your friend, go to the browser you used and clear the history and cache and all private data!

[PCPodpora]

When you are using your computer away from home, you can send mail via webmail. If you are using your ISP-s mail and-or it's smtp server for your outgoing mail server in your e-mail client you have to change it to the smtp server of the ISP at the location you are trying to send it from.