It's very easy to use. You just need to set up your email account details and AlertaMail will notify you every time you get an email. These notifications can be customized to make a loud sound or a discreet one, depending on what you need.
With AlertaMail you always be notified so you don't miss an important email, especially since this program works with Imap, Pop3, Gmail, and Outlook.
It's a simple and fast tool that won't give you any trouble: you get an email, and then a pop-up alert. Also, AlertaMail lets you import your Outlook contacts and calendar.
You can use this program with several email accounts.