For brand teams

Claim Muji

Verify with your work email. Once you're in, products you add are marked as coming from Muji, and only your team can add new ones under its name.

Muji is verified through muji.com or ryohin-keikaku.jp. Use an address there, or at one of its subdomains.

Personal addresses (Gmail, Outlook, iCloud and similar) can't verify a brand.