The new Y! Mail Bate only can use in IE?

Is there have some sort of sofeware that I can use like OE or Outlook? So I don't need everytime open IE to check email?

The new Y! Mail Bate only can use in IE?web browser

Yes...you can POP your mail into Microsoft Outlook as a subscriber of Yahoo! Mail Plus. I use Outlook for all of my Yahoo! Mail. To sign up, just go to http://mailplus.yahoo.com. Here are the other features you get for the $19.99 per year:

POP access and email forwarding鈥擠o all your emailing, even sending from an outside address, from Yahoo! Mail Plus, or read your Yahoo! Mail from another account

2GB of storage

20MB send/receive limit per email

Message Archiving

Yahoo! SpamGuard Plus

50-attachment limit

Yahoo! AddressGuard

50 filters

500 blocked addresses

No promotional taglines on outgoing messages

No graphical ads on your Yahoo! Mail page

The new Y! Mail Bate only can use in IE?windows installer internet explorer

it works perfectly fine for firefox. i'm not sure about other browsers.
you can use firefox also.
Yahoo Mail is a web-based application. It is modeled to look and act similar to programs like Outlook and Mozilla Thurderbird, but must be accessed through a web browser such as IE or Mozilla Firefox.
If you want to use another program to access yahoo mail, such as OE you will have to upgrade and pay for yahoo mail plus which is a premium service and a pop based email server.

The free yahoo is a web based mail service and only accessible through the browswer.