I have been ordering to my mail-drop for a couple of months now and since I started doing this I haven't lost a single minute of sleep worrying about my international packages. I live in an apartment block with about 80 neighbors in a 4 block building and 5 apartments which have been empty for up to a whole year. Instead of ordering to my own address I decided to stick up a fake name on one of the empty apartments mailboxes and whenever there's something in there I just pop it open with a screwdriver from the back and close it by applying some force, it takes less than 10 seconds.
I understand that getting a drop like this can be quite problematic in neighborhoods where the mailman knows everyone, but I am assuming that not everyone lives in areas like those. I have been paying close attention to mailboxes for a while now and it seems like drops like these aren't very hard to come by. So why aren't these more popular? If you're afraid of a CD you can just keep the mail lying in there for a couple of days, and if the address is burned you can simply move to a next one. If you don't have access to the building just figure out who lives on the top floor to get your way in by ringing their bell.
I generally try to break one law at a time. Using a vacant apartment in a complex as your drop address and prying open their mailbox is definitely something that would atleast get you in some trouble with the cops.
I'm friendly with my postman, and chat to him whenever I see him and through him $50 around Christmas. I have definitely seen that investment help as he usually shoves my priority envelopes in my mailbox instead of giving it to the package pick up area where they are supposed to and that place is always closed by the time I get home from work. I also had trouble mailing a letter to Korea and he helped a ton.
I live in a relatively well off part of my city. Dress well, maintain all aspects of appropriate hygiene, make small talk with other residents and generally look like an upstanding citizen. What possible reason could the postman have to suspect me of anything? Granted my main purchases come in powder form so they are much easier to hide in envelopes but along with my habit of always having a few amazon packages delivered a week and mail from friends/gf in Europe and Asia I can't see my mailman somehow being able to single out by dnm purchase and actually caring enough to do something about it.
Now if you are talking about LE finding it through scanning the envelope or bad vendor stealth than I usually keep any of the dnm envelopes on a stand by my door fora few days. I run a clean ship at home (again powders are much easier to hide and I don't smoke weed) so worst case is LE knocks on my door and I say I don't recognize the envelope and left it there to give back to the mailman/throw away since I thought it was junk.