Postini Transition to Google Apps

Google is transitioning Postini services to the Google Apps platform. To prepare for this transition, we have built email security and archiving features into these services:

  • Google Apps for Work / Government / Education
    A professional suite of hosted email, calendar, and collaboration services
  • Google Apps Vault
    Archiving and discovery services for email

Google Apps email settings also work with non-Gmail mail servers such as Microsoft Exchange, so you don't need to switch to Gmail when transitioning from Postini to Google Apps.*

Visit this site to get the latest news on the Postini Transition project and to help you prepare for your transition.

Postini Transition Guide

The Postini Transition Guide provides step-by-step instructions for initiating your service transition and getting started with Google Apps and Google Apps Vault after your service transition is completed.

  • Before my transition
    For links to articles that will help you prepare for your transition, see the home page of the Transition Guide and review the content in the Before my transition section.
  • During my transition
    The steps for your service transition will vary depending on your Postini customer type:
  • After my transition
    If you have completed your service transition, see the home page of the Transition Guide and review the content in the After my transition section. This section includes links to instructions for using Google Apps and Google Apps Vault.


* Google Apps Vault does not support archiving for Lotus Notes/Domino.


News and Updates


Important reminder:
Postini mail filtering to end on June 15, 2015  

As of June 15, 2015, Google will halt all mail flow through Postini systems as a step towards Postini EOL and shutdown. If you do not take immediate action, you may experience mail flow issues on or after that date. See Actions required to prepare for Postini End of Life (EOL).


Update about the transition status & timeline 

Thank you for your patience as we improved our transition processes. Transitions have resumed:
  • Transition deadline dates are provided in the invitation email you receive.
  • The majority of GMS-only customers have been invited.
  • Halted GMD transitions have resumed.
  • GMD customers are being invited. We expect that all remaining GMD customers will be invited in March.
Completing your GMD transition can take up to several weeks, depending on the amount of archive data that needs to be migrated. Rest assured that your Postini services will remain active until you are transitioned to Google Apps.

Transition support for direct & reseller customers  

Google Support is available to help you with your transition whether you bought Postini direct from Google or through a reseller. Note: If you're a reseller customer, please contact your reseller directly for other inquires. 


Google Apps Unlimited 

Customers can upgrade to Google Apps Unlimited after transitioning to Google Apps. Legacy Postini pricing will not be maintained.


Check your transition readiness 

Sign in as root to the Postini Admin Console and click the Transition Console link to access a screen with preparation steps.

Set up and manage email quarantines

See Set up and manage email quarantines for details about the new Quarantines tab in the Google Apps Admin console.

Transition Guide in PDF book format

You can now access the Transition Guide as a comprehensive book in PDF format