As an AppSumo user, the email address you used to register your CalendarHero account becomes the default email associated with your account. You can see the default email address listed first in your email settings. There is no way to change the default email address once your account is registered. This is by design to ensure AppSumo codes are attributed to the correct user email. If you have an AppSumo team plan and would like to change the default email, you will need to delete your account, releasing your AppSumo codes.
After that, you can redeem your codes with your new domain.
Please note that you will need a Google or Microsoft team domain to register (e.g. @calendarhero - not @gmail)
For more information on redeeming codes please refer to our AppSumo FAQ.