brkkab123, Instead of installing Thunderbird, you could use a third party mail program called Pop Peeper. It is a small download, barely uses any system resources while checking for mail, plus you can check unlimited mail accounts (including HotMail and Gmail) and if you're so inclined, you can access accounts via IMAP, if they support it.
I have used this program for over five years and it works very well, with only a few minor issues. If you're interested, here's the link .. Pop Peeper
Pop Peeper Primary Features
* Easy Setup - accounts are imported from your existing email client(s)
* Supports POP3, IMAP (including GMail, AOL, AIM, Netscape, FastMail, mail.com, etc), SMTP, GMail, Hotmail\MSN\LiveMail, Yahoo, MyWay, Excite, iWon, Lycos.com, RediffMail, Juno, NetZero
* IDLE is supported for IMAP accounts which allows instant notification when new mail arrives in your inbox
* Support for RSS feeds is available with purchase of the Premium Add-on Pack
* Read, delete, print and reply to Email without opening your email client
* Send email directly from POP Peeper
* SSL support for POP3, IMAP and SMTP
* HTML email support
* Password protection
* Address book
* Options to protect you from messages that contain viruses and web bugs
* Send, save and open file attachments
* Run POP Peeper off your portable storage device
* No account limit -- notifies you of an unlimited number of accounts
* Many ways to receive new mail notification: skinnable desktop alerts, audio, flashing scroll lock LED and more
* Specify how often all accounts are checked for new mail or set individual intervals for each account
* Extensive help with useful tips and information
Email Notification Options
* Sound notifications: single sound for any new mail, or a customized sound for each account
* Tray icon notification that display the color and number of new messages for each account
* Flashing scroll lock LED
* Windows popup indicating which account(s) received new email
* BalloonTip displays the subject and sender of the last email message received
* Automatically open POP Peeper or launch your email client when new email is received
* Skinnable popup (optional download)
* ScreenSaver (optional download)
* Chime can repeat a sound until acknowledged and\or launch another program when new mail arrives (optional download)
* Snarl notification system plugin (optional download)
* Voice Notification announces the subject and sender of your new messages (premium download)