The very concept of mail (and its delivery) probably varies a lot across Runeterra, and most likely even within each region. There is certainly no single organization that fulfills that role, and I’m pretty sure there are no post offices on the slopes of Mount Targon…



Piltover seems like the most likely place to see anything like what we’d recognize as a modern postal service. Within the city, couriers and other officials might be tasked with hand-delivering messages, or they might use limited telegraphy to deliver more secure information. I could well imagine there being public mailboxes, even regular delivery routes—but only for those who can afford such services.

The empire of Noxus probably uses its military to deliver messages across long distances. Orders from the Immortal Bastion can reach a city governor in Shurima with the next supply ship, although this could take several months and would require some accountability on the part of the carrier if there is any response to be relayed back.



Basically, the only way to ensure a letter reaches the hands of the recipient is probably to take it yourself, or pay someone you trust to do it for you.



However, that highlights another truth about Runeterra: traveling is hard, and dangerous. There are no passports to guarantee safe passage. There is probably very little tourism, if any at all. Even champions aren’t completely free to wander wherever they wish… so when they do, it’s a pretty exceptional and exciting thing.