How can I update my email address?

Currently, the best way to change your email address is to follow these steps:

1) https://login.ubuntu.com
2) Click on Manage email addresses (https://login.ubuntu.com/+emails)
3) Add your new email address in the "Email address" field and click "Add address"
4) You'll need to confirm your new email address, check your inbox and confirm
5) Return to https://login.ubuntu.com/ and set the "Preferred email" to your new address
6) Remove your old email at https://login.ubuntu.com/+emails by clicking the relevant "Remove" button