Letters of Enchantment

Rebecca Ross's Letters of Enchantment is set in Cambria, a country pulled apart by a war between gods, where a letter can travel by magic to a stranger who was never meant to read it. The two central novels follow Iris Winnow and Roman Kitt, rival young journalists who report from the front of that war while writing to one another in secret. The prequel, Wild Reverence, turns back six centuries to the goddess who carried messages between the divine realms and the mortal world.