[New Joe]

Originally Posted by Raakin

Is it possible for Admins to delete individual PMs and to know whether the recipient has read the PM or not?

Originally Posted by ForceHSS

You can do that by default
admincp/Users/Private Message Statistics

But for deleting individual PMs that way you'd have to delete 'all' PMs, you can't just delete the odd one ot two.
As for if the recipient has read the PM that's a standard part of PMing, when you send a PM just tick the:

Request a read receipt for this message
Allows you to see when the message is read by its recipients.

then you know if they've read it or not