It is not yet possible to have several email addresses linked to the same account.
One solution is to create a group address (e.g. firstname.lastname@example.org) which then redirects to 2 addresses. It is also possible to create rules in your email to be able to forward emails to the 2nd address.
If you want to change the email address linked to your account, please fill in this form under the heading "Update my shop", and we will make the changes.
Also, if you have several brands, you can't use the same email address for the different accounts.