If you'd like to edit your BB10 email alerts or your draft room sound effects, the Draft Settings screen is the place to go.
To access the Draft Settings screen, you'll need to be in the draft room. At the top right corner of the draft room, you'll see a small gear icon.
Click on this icon to bring up the Draft Settings.
Note that the default setting is for all email alerts to be turned ON. If you want to turn them off, click on the blue slider next to each setting. Sound effects can also be turned off from this screen. When you've made your setting changes, simply click the X in the top right corner and your changes will be saved.