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

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# Sent External Ratio

## How we describe it

Proportion of sent emails that included at least one external recipient.

## Where this comes from

This signal is derived from Microsoft Graph: `message.toRecipients, message.ccRecipients, organizationDomains, GET /me/sentItems`.

[Microsoft Graph documentation](https://learn.microsoft.com/en-us/graph/api/user-list-mailfolders)

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