Record event attendance state by contact email
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Record event attendance state by contact email
with HubSpot
Works with AI assistants
Use HubSpot: its Marketing Marketing Events Subscriber State Changes API lets you record event attendance state by contact email in a single step (POST /marketing/marketing-events/2026-09/events/{externalEventId}/{subscriberState}/email-upsert). HubSpot also has an MCP server, so an AI assistant like Claude or ChatGPT can do it for you. capabilities.work can help you get signed up and connected.
- How do I mark a list of contacts as registered or attended for a marketing event using their email addresses?
- Will recording a subscriber state by email create the contact if it doesn't exist?
Say it to your AI assistant
- Set contacts {inputs} to {subscriberState} for event {externalEventId} in account {externalAccountId}, matching by email.
- Using email addresses, record {subscriberState} for these attendees of event {externalEventId} (account {externalAccountId}): {inputs}.
For your developer
POST /marketing/marketing-events/2026-09/events/{externalEventId}/{subscriberState}/email-upsert in Marketing Marketing Events Subscriber State Changes API. Full spec on APIs.io.