---
title: "External Ratio"
---

> Documentation Index
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# External Ratio

## How we describe it

Proportion of received emails that came from outside the organization.

## Where this comes from

This signal is derived from Microsoft Graph: `message.sender.emailAddress.address, organizationDomains`.

[Microsoft Graph documentation](https://learn.microsoft.com/en-us/graph/api/resources/message)

Source: https://docs.praxisnavigator.io/analytics/glossary/external-ratio/index.mdx