Webmail or Web-based E-mail comprises of two important terms – Webmail Webmail client and provider. Webmail client is reponsible for receiving and sending email messages using Using POP3 and SMTP Protocols through local or remote servers. Webmail Providers such as Gmail, Yahoo Mail, Hotmail, provide email access using using the webmail client, or a desktop email client.

Here Below is the list of 5 Best Web Mail Clients:

Roundcube webmail:

Free and open source webmail software for the masses, written in PHP.Roundcube provides a streamlined user interface. The default skin includes icons designed by Stephen Horlander and Kevin Gerich for Mozilla.org.

Atmail webmail software

Atmail webmail software and mailserver platform for linux, unix, windows supporting SMTP, POP3 and imap. Linux hardware mailserver solution.

Zimbra Collaboration Suite

Zimbra Collaboration Suite (ZCS) Open Source Edition is available for you to test, evaluate, deploy, customize, and improve. In doing so, we hope you will participate in the Zimbra Community, so that we can work together to make ZCS a better product for everyone.Download the open source version of Zimbra’s email and calendar groupware solution.

AfterLogic WebMail Lite

WebMail Lite is a free product and its support is driven by the community. For those who demand commercial level of support and maintenance along with extended functionality, WebMail Pro edition is available.WebMail Lite can be used to access mail on virtually any POP3 or IMAP enabled mail server.

SquirrelMail – Webmail for Nuts:

It is an open source software written in PHP4 Which Provides Both a web-based email application and an IMAP proxy server.