If you don't like, or simply don't have the time, to constantly check up on the tab in the browser where your email is open, it is time to download an e-mail client. This category has every email client you can think of.
Department Of Posts
Web CEO Ltd.
PaperCut Software Pty Ltd
Tencent Technology (Shenzhen) Company Limited
Zimbra and VMware, Inc.
Stellar Information Systems Ltd.
AtomPark Software Inc.
Sourcebits Technologies Pvt. Ltd.