Event, schedule, segment-entry, segment-exit, property change, webhook in, API call — pick the right tool, no glue code.
Fire when a specific event arrives. Filter by properties.
Cron, one-off, or relative ("3 days after signup").
Trigger on segment entry, exit, or re-entry.
Fire when any user or account attribute crosses a threshold — MRR doubled, seat-count > 5, churn-risk flipped to high. No event needed.
Free forever for < 1,000 users. No credit card required.