Adding an RSVP button to a Customer.io email lets recipients register for your event directly from a triggered or broadcast send. Copy the RSVP link from AddEvent and insert it in your Customer.io template.

Step-by-step

1. In your AddEvent dashboard, create your RSVP event and go to Sharing
2. Copy the RSVP link
3. In Customer.io, open your email template
4. Add a button or anchor tag pointing to the AddEvent RSVP URL
5. Label it "RSVP Now" or "Register"
6. Use Customer.io's preview to confirm the link works

Personalizing with Liquid

Pre-populate the RSVP URL with the person's email address to reduce form friction: ` https://www.addevent.com/event/YOUR-EVENT-ID?email={{ customer.email | url_encode }} `

Triggered campaigns

Customer.io is well-suited for behaviorally triggered RSVP invitations. For example, trigger an event invitation email when a user reaches a specific milestone (trial day 7, purchase count threshold, etc.), with the RSVP link directing them to register for an onboarding webinar or customer event.

Syncing registrations back to Customer.io

Use AddEvent's Zapier integration to track RSVP submissions as Customer.io events. When someone registers via AddEvent, Zapier fires a rsvp_registered event on their Customer.io profile. Use this event to trigger confirmation workflows, suppress them from reminder sends, or move them to a post-event follow-up campaign.