Roundcube Webmail is a free email client that lets you access your inbox. 

You should be aware that this client is a browser-based open source project from the start. While it lacks the functionality of competitors such as Gmail, this client still has a lot to offer. 

It comes with a user-friendly address book that uses Lightweight Directory Access Protocol (LDAP) to help you locate the contact you’re searching for as you type. 

This business and productivity platform also supports HTML emails. If those features aren’t enough for you, you can get more client components by installing plug-ins.