If you have multiple email accounts like Gmail, Yahoo Mail, Hotmail, AOL, Daum, etc. then you will certainly find it troublesome to go and check on each and every account to see whether if there is any new message or not. Imagine the amount of time loss doing all these.
For convenience and at the same time saving your precious time, here is a Firefox extension that helps to notify you when there is any new email message in your mailboxes.
The installation is straightforward and upon installation, an envelope icon will appear on the bottom right side of your Firefox browser with a dialog box that pops up when mouse-over to show you the number of unread emails in your accounts.
In order to use WebMail Notifier, you first need to indicate your account’s host like Gmail, Yahoo Mail or Hotmail, then key in your username and password for the account in the Webmail Notifier’s options section.
You can have instant access to your email accounts through WebMail Notifier’s right-click menu.
The Firefox extension can be downloaded from the Modzilla website

