For brand teams

Claim Sega

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

Sega is verified through sega.co.jp or sega.com. Use an address there, or at one of its subdomains.

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