Roundcube Webmail is a free email client that you can use to manage your emails. Right off the bat, you should know that this client is an open-source browser-based project. Even though it does not have as many features as others like Gmail, this client still offers a lot to offer. It has an intuitive address book with a lightweight directory access protocol (LDAP) that functions to help you find the contact you are looking for as you type it. HTML emails are supported by this business and productivity tool as well. And if those features didn’t satisfy, you can opt to get plug-ins for more client components.