Google Workspace Integration Guide: Introduction

This guide explains how to integrate the CipherMail Email Encryption Gateway with Google Workspace (formerly G Suite).


  • A functional CipherMail Email Encryption Gateway (enterprise edition) or Webmail Messenger.

  • The CipherMail appliance should allow incoming email on port 25.

  • The CipherMail appliance should be allowed to send email on port 25.

  • The CipherMail appliance should have a static external IP address.

  • The CipherMail appliance is configured with a trusted TLS certificate (for using the built-in Let’s Encrypt module).

  • Google Workspace account with exchange admin access.


Most cloud based providers like for example Azure or Digital Ocean by default do not allow outgoing email on port 25. Contact the cloud provider to lift these restrictions.

CipherMail Email Encryption Gateway Google Workspace