Google added two new business-focused features to e-mail in the Google Apps Premier Edition - e-mail retention policies and e-mail delegation.

E-mail retention policies - help companies comply with industry and government regulations by allowing their admins to determine how long an email should remain in the system before being automatically deleted.

E-mail delegation allows employees to specify other users allowed to manage email for them – especially useful to executives and administrative assistants.

Administrators can enable these features from the administrative control panel under the 'Email Settings' tab.