A webmail app lets you send out and receive e-mails by way of an Internet browser without the need to create an e-mail inside a program like Thunderbird or Outlook. If you travel, for instance, it is possible to check your e-mails from an Internet café and you will not have to download, install or configure anything at all. Webmail apps are advanced enough to present you with lots of options like using an address book or creating folders that will later on come in your e-mail app. As a webmail software works with the messages on your server, it is necessary that you employ the IMAP protocol any time you set up an email account on your desktop. You can still use webmail if you choose POP, but old e-mails will not be available as they will have been downloaded on your computer. You can use webmail provided that there is any sort of e-mail set up with your web hosting account and using an e-mail client before being able to use webmail is not a requirement, so you're able to control your electronic communication completely via a browser.