Yahoo!7 Toolbar can alert you when you receive new voice messages even when you're not signed in to Yahoo!7 Messenger, and allow you to quickly launch and sign in to Yahoo!7 Messenger to listen to your voicemail. Just add the Messenger button to your toolbar and sign in to enable this feature.

When you receive a new voicemail, you'll see the Messenger button change, and the message "New voice message(s)" appears above your Contact List in the Messenger button.

The Messenger button requires Yahoo!7 Toolbar 6.2 for Internet Explorer or newer, and Yahoo!7 Messenger 7.0 or newer. To check the version of your toolbar, select "About Yahoo! Toolbar" from the Pencil menu. To check the version of your Yahoo!7 Messenger client, select "About Yahoo! Messenger" from the Help menu.

If you have Yahoo!7 Toolbar 6.2 for Internet Explorer and Yahoo!7 Messenger installed, but don't have the Messenger button on your toolbar, you can add it to your Yahoo!7 Toolbar now (this requires sign-in).