Integrations
Connect Who's In to the tools you already use. Automate notifications, sync attendee data, accept payments, and share events across every channel.
Slack
Real-time RSVP notifications in channels
Discord
Event updates in Discord servers
RSVP links and reminders via WhatsApp
Email / SMTP
Automated event emails and reminders
HubSpot
Sync attendees to HubSpot contacts
Mailchimp
Add RSVPs to mailing lists automatically
Google Sheets
Export attendee data to spreadsheets
Zapier
5,000+ apps — native Zapier app in review; webhook Zaps work today
Make
Advanced automation workflows
Webhooks
Custom integrations via webhook events
WebMCP
AI agent integration protocol
Stripe
Ticket sales and payment processing
Apple Pay
One-tap mobile payments
Google Pay
One-tap mobile payments
Share events, verified attendance badges
X / Twitter
Auto-share events
Google Calendar
Sync events to Google Calendar
Apple Calendar
Add events via .ics download
Apple Wallet
Event passes in Apple Wallet
Google Wallet
Event passes in Google Wallet
