Logging into your email account directly is very easy, all you need to do is type yourwebaddress.com/webmail in the address bar of your browser. The following page will appear after a momentary redirect. Just your email address and password in the space provided and click Log in.
On these servers you have the option of selecting 3 different mail clients, I’m using horde (simply because it’s the first one but you can select any one you prefer.)
Horde will open the following window.
Select Inbox and you will see something like the following. You can use this to send and receive mail from where ever you are. But in all honesty your far better off using a cloud based solution like gmail to aggregate and manage your email accounts.