does the user know that the admin has read his/her p.m.?
i mean, are the messages marked "Read" once the admin has gone through them?

No Tutu, the messages remain unread.

According to your postbit your using
'3.6.1'
I would use the later versoin :)

This version works perfectly fine on 3.6.5, and see no reason to switch until it starts acting up.

Thanks for the hack.

I was wondering, when people delete their PMs from their inbox and/or outbox, it also dissapears in your "read pms" - is there any way to prevent that?

Never got to thank you for this, but it has come in handy many times to prevent PM Spam, so thanks!

You are welcome :)

Snickers, theres no way to prevent that, when a user deletes the PM it gets removed from the database.

I am trying to install this mod, I am getting this vBulletin Message (error)

"Invalid File Specified"

in the Admin CP I am at "Plugins & Products > Manage Products I have browsed my PC for the file cpnav_rpm.xml and click on "Import" and then it trys to load and I get the above message while its trying to install. And ideas?

Thanks

You don't import products to install this mod, you just upload files to the correct places.