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.
Perion Network Ltd.
SMS Free Sender
Mortal Universe Software Entertainment
Stellar Information Systems Ltd.
Striata Communication Solutions
AtomPark Software Inc.
WinZip Computing, S.L.
KBB Software, LLC
Lepide Software Pvt.Ltd