Don't attempt to educate 419ers!
As sam bo pointed out above, it is not a good idea to correct 419ers mistakes or educate them in English. Their English is just fine. Typing with caps lock on commands attention. Getting the odd address in the wrong format is neither here nor there. When they offer huge sums of money from throwaway email addresses, it is just to protect their identity, most of us do the same thing. Give these lads a chance. Give them all the rope they need and they will use it wisely :-)