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# Outbound Message Logging

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

The Outbound Message Logging policy logs custom messages from outbound requests sent to upstream
services, responses from upstream services, or information from other outbound policies applied to
the same upstream service.

For configuration details, see
[Outbound Message Logging Policy](https://docs.mulesoft.com/gateway/latest/policies-outbound-message-logging).

## September 2, 2026

### What’s New

- The policy now supports data masking to detect and mask personally identifiable information (PII),
  such as email addresses, in log messages before they are written. You can select built-in PII
  types (Email, US SSN, Credit Card, and Phone Number) or add custom regex patterns. Request and
  response bodies are forwarded to the upstream service unchanged.

- Outbound Message Logging policy implementation version x.x.x is now supported by Omni Gateway.

- Outbound Message Logging policy definition version x.x.x is now supported by Omni Gateway.

## February 24, 2025

### What’s New

- Outbound Message Logging policy implementation version 1.2.1 is now supported by Omni Gateway.

- Outbound Message Logging policy definition version 2.0.2 is now supported by Omni Gateway.