I need to create a powershell command that will extract header information for all emails in a mailbox to a .csv file. Anyone have a script handy for this?

I think your best approach is using Outlook VBA. There aren't any Exchange Management Shell commands I'm aware of that get mailbox content except for a full export.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

see if this helps http://www.stevieg.org/2010/10/export-email-headers-exchange-powershell/MCSE | MCITP - Server 2008 | MCITP - Exchange 2007 | MCTS - Exchange 2010