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The Metrics page summarizes project email outcomes over a selected time window. Use it to find changes, then open individual messages, domains, contacts, or suppressions for root-cause work.

Time windows and granularity

Choose 24 hours, 7 days, 30 days, or 90 days. The 24-hour view uses hourly buckets. Longer views can use daily buckets. Compare equivalent windows before calling a change a trend.

Counts

Signal reports sent, delivered, opened, clicked, bounced, complained, failed, and unsubscribed outcomes. Counts can arrive asynchronously as providers and tracking events report back.

Rates

Open and click metrics depend on tracking configuration and mail-client behavior. Privacy protections, image blocking, link scanning, and security gateways can affect them.

Volume timeline

Use the timeline to locate the hour or day where behavior changed. Correlate that point with deployments, audience changes, domain changes, content changes, provider incidents, and quota pressure.

Deliverability advisor

When enabled for the project, the advisor grades recent delivery health and recommends investigation areas. The dashboard bands are Healthy at 90 or above, Good at 75 or above, Needs attention at 50 or above, and Critical below 50. Treat the score as a summary of underlying evidence, not an independent delivery guarantee.

Investigation sequence

  1. Confirm whether total volume changed.
  2. Separate bounce, complaint, failure, rejection, and suppression growth.
  3. Narrow the time range.
  4. Open affected message timelines.
  5. Check domain authentication and tracking state.
  6. Check the audience source and suppression behavior.
  7. Record the change and watch the next equivalent window.

SDK example

After creating an authenticated client with the matching SDK setup guide, use the operation for your language or framework.
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