Google said Wednesday that it's added Postini's e-mail security and compliance service to its Google Apps Premier Edition just as it was expected to when it said in July that it was buying the company for $625 million cash.

The Postini widgetry is supposed to be a come-on for the enterprise to use Google's hosted applications.

Google said user could now set configurable spam and virus filtering; centrally manage outbound content; create, manage and report policies that apply to user groups or individuals; give admins visibility into all e-mail for compliance purposes; and restore any messages inadvertently deleted in the last 90 days.

As an added enticement, Google is throwing in increased storage - 25GB a user rather than 10 - and a new e-mail routing scheme (also available in Google Apps Education Edition) so organizations can run Google Apps alongside another e-mail solution so the stuff can be piloted, say.

Google is offering Postini's 11 million pre-acquisition users a free trial until next June 30 to get them to migrate.

Google Apps includes Gmail, Google Calendar, Google Talk, Google Docs and the Start Page and runs 50 bucks a seat a year.