Tried it for a day before uninstalling. Concept is good but execution is poor. Very slow on large folders--I archive regularly, but I still have thousands of emails in my main PST file. Also, if you choose to have spam moved to a Spam Outlook folder, there is no easy way way to empty it after reviewing. I'm looking for a button that one press would empty the folder--not implemented. I chose to unblock a Spam message. Ten minutes late it was still being 'examined.' Cancel did nothing--I had to use Task Manager to kill Outlook. This might be OK for light email use, but is definitely lacking for very heavy email use.