Interesting story regarding mine a US passport that needed to be sent to the Embassy in Bangkok for Renewal because they are not doing any more personal appointments for passport renewal
I am just the opposite of you I wanted to go pick my passport up at the embassy but no go you had to send them the amount of money that it cost Thailand post registered and it would be delivered back to you.
Well I sent it DHL to the Embassy they notified me they send it to the US then I heard nothing for 6 weeks I contacted the embassy via their email and they responded right away telling me that my passport had been processed but they couldn't be sure of the exact delivery date. I felt better knowing it had been processed and it was back in thailand.
A few days later I was over at a friend's house I get a call on my telephone I have a delivery from Lazada. I know for a fact I don't have anything coming from Lazada so I don't give it a second thought. I look at my tracking number for my passport and it says that they tried to deliver it and we're unable to contact me. I get a hold of an English-speaking person at Thailand post give them my number they tell me they tried to deliver it yesterday they will try again today. Next day about 2:00 I get a call I have a delivery for you from Lazada before I could tell him I didn't have anything coming from Lazada I said I'll come down and have a look.
Well you can't make this shit up I go downstairs sure enough there's a Lazada guy and he's got a manila envelope containing my new passport and my old passport he doesn't require a signature despite it saying registered. I have no idea how it ended up with a Lazada delivery guy but this is the exact reason I would have preferred going and picking it up myself.