Not at this time.
Redbubble is currently rethinking site experience for artists, including the way accounts are handled behind the scenes. While this is happening, we will be temporarily unable to change email addresses.
The upside of this is that once the work is done, users will be able to make these changes themselves without needing to lodge a request with us.
This work is reasonably complex, with multiple stages of implementation, so we don’t have a finish date at this time. We’ll be releasing a post on our blog once we wrap things up.
In the meantime, you’re welcome to cancel your current account, create a new account with a new username and the correct email address.