You can edit your email settings by going to the lower-left corner of your screen and click Settings.
Click the Email tab. Here you can edit email address and select which type of email you'd like to subscribe to. When you check a box, you subscribe to that email category, and when you clear a box, you unsubscribe from that email category.
When you are done editing your email settings, click Save Changes.
Additionally, you can now sign in to Klout using an email address and password. If you haven't set up a password for the email address associated with your Klout account, go to your profile settings and click Create Password to add one.