Roles and Self-Assign Channels
Many servers let members pick their own roles for interests, pronouns, regions or notification preferences. With the Community feature, Onboarding can ask these as questions when someone joins. Without it, a roles channel with a short explanation of each role works; many servers use a bot for reaction roles. Either way, mention it in the welcome message, because people who pick roles feel at home sooner and get the notifications they actually want.