Open Profile in the sidebar.

Your name, phone and company
Edit the fields under Your details and click Save changes. They fill in your next checkout.
Your email address
The email address is where invoices, notifications and password resets go, and it is how you sign in.
- Under Email address, type the new email address.
- Enter your current password — it proves the request is yours.
- Click Send confirmation link.
- Open the email sent to the new address and follow the link.
Until you follow the link, the old address stays in use. A link that is never followed changes nothing.
Note
Your account details and your domains' contact details are separate. Changing your account email doesn't change the registrant email on your domains — see Edit your domain's contact details.