A webmail app lets you send out and receive messages by way of browser without the need to set up an email inside a program like Thunderbird or Outlook. If you travel, for instance, you'll be able to check your email messages from an Internet café and you will not have to download, install or set up anything. Webmail apps are advanced enough to provide you with a lot of options like having an address book or creating folders that can later show up in your e-mail application. As the webmail app works with the messages on your server, it is essential that you employ the IMAP protocol any time you create an email account on your desktop. You may still use webmail if you select POP, but old messages will not be available since they will have been downloaded on your computer. You can use webmail provided that there is any sort of email created with your web hosting account and using an e-mail client before being able to use webmail isn't a prerequisite, so you're able to handle your electronic communication entirely via an Internet browser.