Webmail is a really useful replacement for computer and mobile phone e-mail apps if you do not have access to your personal machine and you don't have a smart phone. You'll be able to access your email messages through virtually any browser, so that you can keep in touch with people if you travel and you go to an Internet cafe, for instance. Webmail apps are rather advanced, so not only will you be able to send and receive e-mails, but you will also be able to work with an address book, set up a customized signature as well as make new folders, that will later appear in your desktop email program. It is important to know that the e-mails shown in the webmail are the ones on the server, so in case you set up an e-mail address in a PC app with the POP protocol, the messages will be downloaded on your computer and they will not be accessible in the webmail. The answer in this instance is to apply the IMAP protocol any time you set up your emails inside a desktop computer app.