As an enterprise-class email, collaboration and calendar solution, Zimbra attracts everyone who likes to reap benefits from the enterprise applications. A redesigned browser-based interface is the foremost attraction of this web mail. All users of this webmail get the innovative messaging experience and connect with end users without complexity and delay. They also take advantage of the personal clouds and use the professional guidance to be successful in their way to use this software suite. They boost up the productivity due to the recently improved, innovative, robust and browser based interface. They get various benefits from the easy-to-customize filters and dedicated search tab. Webmail applications let users to check their email accounts by using their web browser. Users of these applications can compose and read any email message. They can also maintain an address book as per their convenience and perform several tasks. Though offline email client apps such as Microsoft Outlook provide more impressive facilities than webmail apps, they require the highest possible initial configuration. The two cPanel webmail apps are Horde and Roundcube. These applications have their own subtle differences. However, these applications provide the secure emails on the web. An open source development community named Horde Project provides the best-in-class webmail application at all times. As the leading open source webmail application in the world, RoundCube encourages many people to access and use it.