> ## Documentation Index > Fetch the complete documentation index at: https://docs.chartcastr.com/llms.txt > Use this file to discover all available pages before exploring further. # Delivery and volume stats > Track pulse delivery patterns, view your activity calendar, and monitor total deliveries over time. Identify peak sending days and trends at a glance. The Overview tab shows your delivery fundamentals: how reliably your pulses are being delivered, what the daily volume looks like, and a long-range view of your activity. ## Delivery Volume Chart A stacked area chart showing the daily breakdown of pulse deliveries over the selected period. The three layers are: | Layer | Colour | Meaning | | ------------- | ------ | ----------------------------------------- | | **Success** | Green | Pulse delivered with new data | | **Unchanged** | Grey | Data source checked, no changes to report | | **Failed** | Red | Delivery attempted but failed | Hover over any point to see the exact daily breakdown. **What to look for:** * A healthy chart is mostly green and grey with minimal or no red. * A growing red area means something needs attention — check your connection health in Settings. * A chart that's mostly grey may mean your data doesn't change as often as you're checking. Consider reducing pulse frequency to cut noise. * A chart that's mostly green means your schedule is well-matched to how often your data actually changes. ## Pulse Activity Calendar A year-long heatmap (similar to a GitHub contribution graph) showing your pulse activity over the last 365 days. Each cell is one day, coloured by intensity. Toggle between three views: | View | What It Shows | | ---------------- | ------------------------------------------- | | **All** | Combined activity across all metrics | | **Pulses** | Successful and unchanged deliveries per day | | **Interactions** | Thread conversations and reactions per day | Hover over any cell to see the exact counts and date. **What to look for:** * Consistent colour across weekdays means your schedules are running reliably. * Gaps may indicate paused connections, outages, or weekends if you don't schedule weekend pulses. * The **Interactions** view is useful for spotting which days generate the most discussion — this can help you time your most important pulses. * Seasonal patterns may emerge over time as your team's data cadence becomes visible. ## Next Steps See who's reacting and when they're most active. Review the four key metrics.