Mail Restriction?

[Corvie]

I have a couple of friends who are playing BnS atm on Mushin. I gifted them premium via NCoin, but they say that they cannot use the mail feature in game. Everything is greyed out and there's a message that says "You must spend Ncoin to unlock the mail feature". Seriously?

 

How can this game not even accommodate such a simple feature as the mail/parcel? How are you expected to transfer items between multiple characters on the same account?

[ANMLxBrandon]

Did they go to the Dragon Trader in towns to access mail, perhaps accessing mail via the menu(f6) is a premium thing.