Fast and prompt work of the staff and the post office itself (the parcel was delivered from Minsk to Grodno without problems within a day), cash on delivery was received the next day after delivery. The only thing I recommend is to pack your parcel in the right container in advance and wrap it with tape yourself - it's too much unjustified prices for boxes there, even they took 60 kopecks for scotch tape...But it's just a personal quibble.
Why was the parcel not given to a relative (mother-in-law)? There was an original passport and a postal item number! There is no way to come for the next month! And you need to get the package. "Thank you"!