I would like to monitor an Outlook user's experience by measuring the response time between the client and the Exchange server, e.g. message round trip. I would like to use this to check SLA adherence.

It would also be a bonus if this can integrate with MOM. Does anybody know of a way or a tool to do this?

Contributed By: Chris Harris [MSFT]
If you are using Outlook 2003 and Exchange 2003 Outlook collects statistics like you are looking for and sends them to the Exchange server. These stats are available as Perfmon counters on the Exchange server and the Exchange 2003 Management Pack for MOM leverages these counters, providing reports, etc.

If you are using other versions of the software you will need to take a look at third-party utilities.