Question : How to monitor ReadyBoost usage?

 How do you know that the pendrive / sd card that is dedicated for ReadyBoost is being used by the computer?  Are there special applications to monitor ReadyBoost usage? My reason for this is that I would like to see if the pendrive / sd card connected is really being used as additional RAM. Thanks in advance.

Answer : How to monitor ReadyBoost usage?

How about Tools - options - Mail setup - send receive - check automatic send/receive time. Also be sure that in File tab "work offline" is not ticked