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# Message Logging

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

The Message Logging policy logs custom messages using information from incoming requests, responses
from the backend, or information from other policies applied to the same API endpoint.

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

## October 1, 2026

### What’s New

- Message Logging policy definition version 2.0.3 is now supported by Omni Gateway.

- This release updates policy metadata only. There’s no functional change.

## 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.

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

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

## February 27, 2025

### What’s New

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

- Message Logging policy definition version 2.0.1 is now supported by Omni Gateway.