To update your information, log into your account on peets.com. Once logged in, go to the "Settings" tab.
From there you can update your email preferences and account password.
To update your Email Address or Email Preferences, click on "Edit Email Preferences".
To update your Account Password, click on "Edit Password".
If you would like to update your shipping or billing address, click on the "Address Book" tab within your Peet's account and click "Edit" next to the address you are looking to update.