Hi, When user logs in OWA for the first time he get many default mail settings. For example, user navigates to Options - Message Format and sees than his message format is set to HTML. User can change this and other settings and save them. Settings are saved and stored somewhere (attributes of users account in Active Directory?). I would like to 1. Change these default setting for new mailboxes (similarly as I can turn on and off for example change password feature for OWA) 2. be able to change these settings per user using power shell or something (as I can change attribute in AD to enable or disable change password feature per user) Does anybody know hot to accomplish this? Thanks, Michal.