To change the email address associated with your Coinbase Exchange account, please follow the steps below:
1. Sign in to your Coinbase account via exchange.coinbase.com
2. Select your user icon in the top right and select Manage Account
3. A new window will open, and select Security on the left hand side bar
4. In the tab "Email & password" click on update beside Email address
5. From here you may be prompted to complete 2-step verification
6. Enter your updated email address and select Continue
7. Please ensure the new email address is not already associated with an existing Coinbase account
8. A verification email will be sent to the new email address to be confirmed, with a prompt to "Click this button to confirm device". Once you select this, your email will be updated.
Please note that Coinbase Exchange accounts can only be associated with a single email address.