This is only one in a large number of these scams on the internet.  Some of the more common are PayPal, Citizens Bank, US Bank, and CitiBank.

As always, delete the e-mail.  Do not click on any provided link.  The E-mail has the following characteristics, but the content may vary.

From:  Washington Mutual

Subject:  Notification of Washington Mutual Internet Banking Account

Dear Washington Mutual Customer,

In order to maintain the safety and integrity of our Washington Mutual community, we have issued the following warning.
It came to our attention that your account may be suspected of fraud.
We ask our users with exposed accounts to confirm their identity with Washington Mutual every once in a while, in order to upkeep the safety of our environment.
If the submitted information will fail to match our records for three times, your account will be suspended until further notice.
If you will fail to confirm your identity within the next 48 hours, your account will be suspended until further notice.
Please follow the link below and confirm your account information:

https://login.persona.wamu.com/logon/logn.asp

Washington Mutual Customer Service

Benefit your favorite school!

When you make a purchase using your Washington Mutual Visa* Check Card after enrolling in our WaMoola for Schools* program, you earn a point for your school.(Points are converted to dollars at the end of the year and donated to the school of your choice.)

Find out more at our WaMoola for Schools* program Web site:
http://www.wamoolaforschools.com

*WaMoola for Schools are registered trademarks of Washington
Mutual, Inc. Visa is a registered trademark of Visa International
Service Association.