Email & Calendar Integration for Relationship Strength
Ingest Gmail, Outlook, and calendar metadata to power three transparent relationship indicators on contact profiles: connection strength, contact reachability, and key connection.
TL;DR
The live Google integration already ships — we're extending it with email + calendar metadata, building Microsoft 365 alongside, and using Findem enrichment as the dedup oracle. A thin V1 ships with 50% heuristic coverage; full V1 lands at ~88% after Findem user-enrichment comes online.
Architecture & execution plan
For engineers. How the system is built — services, data model, external integrations, phased plan.
- System architecture + ER diagram
- Integration status per provider
- Rule engine & scoring service
- Operational envelope (numbers)
- FAQ & decision records (ADRs)
- 11 sections, 8 flow charts
From data to strength
For PM, design, reviewers. What data we ingest and how it becomes a signal.
- Raw data → signal primitives
- Every heuristic in plain English + code
- Combining clauses into tiers
- Reachability rollup
- Worked scenarios + scale walkthrough
- Privacy guardrails
Google & Microsoft — per provider
For backend engineers. What exists, what extends, what's greenfield, with code skeletons and official doc links.
- Verified current-state audit
- OAuth flow + scope management
- Gmail metadata + Calendar clients
- MS Graph Mail + Calendar (greenfield)
- Azure AD multi-tenant setup
- Shared-mailbox decision matrix