Here you will find all the ID and all relevant info about the courier's letter
Courier's Letter: Editor Name & Spawn id
What is the Editor Name of the Courier's Letter?
WERoad08CourierLetter
Courier's Letter ID Code:
001065F5
Courier's Letter: Spawn Commands
Spawn Command to get the Courier's Letter into the game:
Open the console and enter [player.AddItem] then the [Base ID] and then the [Amount]. With the example below, you will add one Courier's Letter.
player.AddItem 001065F5 1
Spawn Command to place the Courier's Letter in front of your character:
Open the console and enter [player.AddItem] then the [Base ID] and then the [Amount]. The example below places one Courier's Letter in front of your character.
player.PlaceAtMe 001065F5 1