Getting messages through the world is an ordeal in itself, in addition to the distance between people and the comparative rarity of means of travel, there is also a tremendous amount of danger to travelers. Most communications is handled by either the merchants guild using their ships and trade routes for delivery of postage and packaging, or by specific courier companies that have their own ships and flying mounts they use for faster, more reliable, delivery.
Some employ magical means for communications. Sending stones, scrying, even teleportation is used to communicate over vast distances. However, these tools are expensive and require training and resources to develop. Because of this, there are extremely few developed and expansive communications networks that employ magic. There are numerous smaller systems to communicate between individuals though.
Print tools are relatively simple affairs, basic printing presses and movable type are available to those who want to use them. Many use these tools to develop newsletters and newspapers that are distributed through merchant guild’s trade routes.