Connect Brevo to HeySummit when you want attendee registrations to be sent to a Brevo contact list for your email campaigns and follow-up workflows.

You will need a Brevo API key and the Brevo list where HeySummit should add attendees. In Brevo, API keys are managed from Settings > SMTP & API. Depending on your Brevo account view, the API key area may be labelled API Keys or API Keys & MCP. Generate a new API key, then keep it somewhere safe while you finish the HeySummit setup.

After Brevo is connected, HeySummit automatically syncs attendees who register for your event. After the integration is connected, attendees are sent to the Brevo list configured for this provider. If a contact with the same email already exists in Brevo, HeySummit updates the existing contact instead of intentionally creating a duplicate. You can also map HeySummit registration questions and other attendee fields to Brevo contact attributes. Edit the integration, then use the Custom Registration Field Mappings and Other Field Mappings sections. Fields that are not mapped will not be synced. If you connected Brevo after attendees had already registered, open the integration's actions menu and choose Resync Attendees. HeySummit will queue existing event attendees to be synced with Brevo.

For the shared sync model, attendee resyncs, consent behavior, plan access, and the difference between provider campaigns and HeySummit event emails, see CRM & Email Integrations.