TL;DR: A converting welcome system has 7 steps: a pinned welcome post with a 3-question intro template, personal replies to every introduction within hours, a 7-day drip of orientation content, a buddy or cohort match, one easy first win, an invitation to the first event, and a day-7 check-in. Communities with onboarding flows retain 91% of new members in their first week — versus under 30%...