Apparently there isn’t a lot of language drift in Icelandic, it’s one of the few languages that you can read texts from 1000 years ago without any significant loss of meaning. Unlike English where reading anything older than Shakespeare can prove difficult.
Probably literally mails them with postage, spending money on stamps and such.
Nowadays you can be like “oh shit my bill is due, gotta open up my finance app to pay the bill.” Before it was the same but you had to remember 3 business days in advance for the postage delivery times.
It’s hot as balls outside though. Gotta have some AC going.