Paypal say on signup they will never ever send out emails asking for security info, so if I get something from them I just dump it.
The other stuff I often see is the emails from the banks that I am not registered with. I just fill them in the Police sounding details and send it back if I am bored.

you shouldn't even do that skruntie as any reply tells them your address is valid 
The only address they get thats valid is my email one, and it's only a hotmail one
The fact it wasnt rejected they allready know its valid.
Good luck to them.
I just hope they contact some of the address I send them.
Safe***** windows
Angl***n Windows
are just a couple of them.
People who call at my door leave some usefull information.
I am going to start savig actual junk post, and if I get 3 from the same group I will post the whole lost back to them in an A4 with out a stamp.
Considering they all complain about wasting the planet and going green I think it is a complete waste of money ad trees to give me something I DONT actually want or even read. Also th fact I have a door plaque that specifically say's
No Junk Mail
No Canvesser's
No Caller's