A webmail app allows you to send out and receive messages by way of a web browser without the need to create an e-mail in an app such as Thunderbird or Outlook. When you travel, for instance, you'll be able to check your emails from an Internet café and you will not have to download, install or set up anything at all. Webmail clients are advanced enough to offer you many options like using an address book or creating folders that can afterwards appear in your e-mail application. As a webmail app works with the messages within the server, it is important that you employ the IMAP protocol any time you set up an e-mail account on your desktop. You can still use webmail if you choose POP, but older e-mails won't be available due to the fact that they will have been downloaded on your computer. You can take advantage of webmail as long as there is any sort of email set up with your web hosting account and using an email app prior to being able to use webmail is not a requirement, so you're able to control your electronic communication solely from a browser.