I'm sure a number of people do that but one thing you have to be aware of is the possibility that the previous tenant can go to the post office at any time and request that their mail be forwarded to a new address instead of the old one. This may already be happening in this case, and you're just getting the junk mail in their names. If you're getting bank statements and official government letters etc. I'd imagine its safe enough to use their name. Keep in mind though that it doesn't actually add any security - if you're caught in possession of it, it won't matter what name it was addressed to whether it's John Smith or Mickey Mouse. The only benefit is being able to say "It must have been for the previous owner, we still get their mail"; the response to which -by a judge - would probably be "You were found in possession of drug X; therefore I am finding you guilty of possession of a controlled substance", possibly with an added "with intent for sale and supply" tacked on the end depending on your local laws regarding possession of controlled substances. Libertas