Connect Brevo to send eligible completed event registrations to a Brevo contact list for campaigns and follow-up.
Before you start
Your HeySummit plan must include direct CRM and email integrations. You need a Brevo list and permission to manage API keys. In Brevo, use the account dropdown to open Settings > SMTP & API > API Keys & MCP. Some screens may still show API Keys.
Choose Generate a new API key and complete any identity verification.
Name the key for this integration, choose its expiry and select Generate.
Copy the key and store it securely; Brevo shows the full value only at creation.
Use the standard API key for HeySummit. Do not convert it to an MCP server key, because Brevo deactivates the standard key when you do so.
These are Brevo's example screens. A key can stop working when its chosen expiry is reached or after 90 days without a successful API call, even with no fixed expiry. See Brevo's current API key guide.
Connect Brevo in HeySummit
Open Event Settings > Integrations & Developer > Integrations.
Under CRM & Email Integrations, choose Add, then Brevo.
Paste the standard Brevo API key.
After the key is accepted, select the Brevo list that should receive attendees.
Optionally map custom registration answers and additional attendee data to existing Brevo contact attributes.
Select Save.
What HeySummit syncs
HeySummit sends eligible completed registrations to your selected Brevo list. It looks up the email address and updates an existing contact when found. Supported name fields are part of the core contact data. Use Custom Registration Fields Mappings and Other Field Mappings for additional attributes; unmapped additional fields are not sent. To send existing eligible attendees, open the integration's action menu and choose Resync Attendees. This queues a sync, so allow time for it to finish.
Related guide
For marketing consent and how provider campaigns differ from HeySummit event emails, see CRM & Email Integrations.