Troubleshooting & messages · Licence, trial and sign-in messages
Why does Storage Studio say "We can't send to that domain"?
Short answer: The address is from a throwaway email service, and Storage Studio needs one that keeps working for your licence and support replies. Use an email you'll keep.
The address you entered belongs to a throwaway (disposable) email service. Storage Studio needs an address that will still work later, so it can send your licence, receipts and support replies.
Use an email address you'll keep — personal or work.