I believe in angels by cristy lane

The mailmen, Šime, is one of the favorite people of a small town, on an island in the middle of the sea. Šime is very intelligent and the locals have high regards for him because he is unusually well versed in all the events and destinies in the small town. He knows the weather forecast, what winds will blow, what the sermon on the Sunday mass will be. For all the locals Šime is an untouchable genius. However, unlike the locals, the viewers soon find out that the Sime's ingenuity is based on his reading of the mail. Fascinated by other people's destinies, Šime has perfected a way for opening letters and keeping complete records on the people living on the island. He keeps a precise track of who gets what kinds of letters, and that gives him insight into discrete and private affairs of people. One day a beautiful woman named Dea moves into town, and all the men try and court her...