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Overview Fluxomail tracks sends per organization and per identity for visibility and plan enforcement. Usage
  • Monthly sends recorded for billing; identity/org daily counts are available in the app.
  • Autumn usage metrics (e.g., emails_processed) are tracked server-side with idempotency.
Rate limits
  • Per‑minute per‑key limits return 429 with Retry-After seconds.
Endpoints
  • Internal usage endpoint: /api/autumn/usage (server‑side; for dashboards).
  • Public API: Follow Rate limits and Errors docs.
Best practices
  • Set conservative per‑key limits; monitor daily and monthly trends.
  • Use idempotency when retrying to avoid double counting.