it is sometimes convenient to look at your mail when you are away from your own machine, say at the airport or in a hotel, or on your own laptop. This can be done with webmail
to look at the mail use your web browser to go to http://webmail.mydomain.com/myaccount Note the absence of www. Login with your full e-mail address and password.
you can then review your inbox and look at only the messages you are interested in. It is possible to delete messages, to write replies, etc.