> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dmarceye.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Source Summary (Sender Level)

When you drill into a specific sender (for example, Mailchimp), the right-hand panel shows a Source Summary with aggregated statistics for that sender.

| **Metric**                   | **Example**   | **Description**                                                                     |
| :--------------------------- | :------------ | :---------------------------------------------------------------------------------- |
| **Active IP Addresses**      | 86            | The number of unique IPs that sent email as this sender during the selected period. |
| **Average DMARC Compliance** | 99%           | The mean compliance rate across all IPs for this sender.                            |
| **Peak Volume**              | 19,598 Emails | The highest single-day volume seen from this sender in the period.                  |
| **Authentication Method**    | DKIM Primary  | Indicates whether DKIM or SPF is the primary passing authentication method.         |

## **Email Volume Over Time Chart**

The bar chart shows daily email volume reported during the selected period. Each bar represents one day. The colour of the bar indicates authentication health:

* Green bars — all emails from that day passed DMARC.
* Red bars — one or more emails failed DMARC on that day.
* Teal/mixed bars — a mix of passing and failing emails.

Hovering over any bar shows a tooltip with two values: Valid DMARC (number of emails that passed) and Invalid DMARC (number that failed). This chart is available at all three drill-down levels: domain, sender, and IP address.

<Tip>
  Tip: A sudden spike in volume combined with a compliance drop is a strong signal of either a spoofing campaign or an infrastructure change that broke authentication. Investigate spikes first.
</Tip>

## Sender Locations

Below the Source Summary and the Email Volume chart, the **Sender Locations** map shows where this sender's IP addresses are located. See [Sender Locations](/sender-locations).