A private contact email is required for commercial listings. Never shown publicly. Leave blank to keep an email already on file. With an owner email, your Website link becomes followable at three different-voter votes; without one, at five. Optional weekly activity reports and the newsletter require separate consent and confirmation.
When is a contact email required?
Paid, freemium and contact-for-pricing listings, or a main/game link to: Steam, itch.io, Epic Games Store, GOG, Humble, Gumroad, Patreon, Ko-fi, Buy Me a Coffee, Kickstarter, Indiegogo, Apple App Store, Google Play. Your email stays private.
Clearing a link field keeps the saved value. To remove one, contact support.