Reactive silent producer. Listens to mail.created events; extracts the sender's email and stamps a contact_timeline_rollup enrichment with the latest interaction signal. Aggregate-policy upsert keyed on contact email. D-122 ships the cheap deterministic fields only — interaction_count seeded at 1, last_interaction set, recent_subjects single-element. The fuller fold (rolling window, attendee co-occurrence, thread-aware subject deduplication) ships in D-124 housekeeping once timeline-read becomes the producer's primary input. Calendar-side contact contributions also defer to the housekeeping pass.

How it works 4 steps

Inspect the data fetches, transforms, gates, and output this recipe runs.

Process (4 steps)

■ from_email default

Apply default

■ subject default

Apply default

■ upsert ?

skip: step.from_email is_null

■ card to_summary

Format results as a summary card