Mail PassView (MAILPV) allows you to recover your email password if you are lost but they are still stored in Yahoo! Messenger, Google Talk or Windows Live Messenger.
You can download here
Feature Highlights of Mail PassView
To use this software you just run the program, no installation required and it will automatically find as well as display all accounts stored on Yahoo! Messenger, Google Talk or Windows Live Messenger.
Alternatively, you can export your email account settings, including your user name, password, and the option to save the information to a text file or to copy the information to the Clipboard.
One thing you should be aware of when downloading or running this software program is that you should disable all antivirus programs when downloading and using them, as otherwise you will be warned as the process of using this software will become more difficult.
If you use a Mail PassView that you still can’t get your password, you can use SniffPass.