What is the narrator point of view in the novel, Love, Creekwood?

Love, Creekwood is told primarily from the point of view of the four main characters - Simon, Bram, Leah, and Abby. Simon's affairs dominate the book, and he can be labeled as the protagonist. As the novella is epistolary and entirely formatted out of emails that the characters send to one another, the perspective changes with each correspondence.