mabrook
, in my case I sent it by courier and upon receiving their email that passports ready(they asked for prepaid courier request to deliver the passports) I called DHL and forwarded the email from the embassy to them asking for prepaid courier service (that I pay for upon delivery), next day DHL sent me a tracking number(it was next day as I sent it very late, around 7:30 pm), afterwards you just keep waiting, considering it takes few days(around 8 days from the email) and upon receiving the passports with the CPR you will pay for the shipment
NB:- in the embassy email requesting you to do prepaid service they might ask you to wait for couple of days before requesting the DHL prepaid service, you can ignore this as DHL will check with them 3 times a week and when your passports are ready they will bring it
I think its clear that I received my stamped passports