How do I sign out?

To sign out from the Yahoo! Mail for Windows 8 app:

1. Open the charm bar- With touch, swipe in from the right edge, and the charm bar appears on the right side of the screen.
   - With a mouse, move your pointer into the upper-right or lower-right corner, and the charm bar appears on the right side of the screen., and tap or click Settings.
2. Tap or click Sign Out from the options that appear.

You are then returned to the the sign-in screen. You must sign in again to access your mail.