Integrating Your Event Data with Slack, Discord & CRM Tools
Real-time notifications, team updates, member tagging, and CRM integration patterns for Slack, Discord, and HubSpot.
Real-time notifications, team updates, member tagging, and CRM integration patterns for event organisers using Slack, Discord, Notion, and HubSpot.
Who's In? is built for community organisers, fitness instructors, yoga teachers, running clubs, book groups, and anyone who runs regular events. It handles RSVPs, waitlists, recurring events, memberships, and payments — all for free.
Sign up for free at whos-in.app, create your first event in under 2 minutes, and share the link via WhatsApp, email, or social media. No app download required for your guests — they RSVP via the mobile-optimised web link.