I use a clara.net email address, with free webmail and POP3 (ie use with Outlook, Outlook express etc) and it's free, totally free. Log in using the PC when at home, log in at an internet cafe/friends PC etc when travelling.
Go to
http://www.uk.clara.net/homeaccess/ and click on free trial on the right.
You will be able to set your own address eg
[email protected], and you'll get 10mb of webspace. Easy to upgrade later. I've used it with several ISPs over the last three years.