One day in spring 1964, the young American poet Robert Bly left his rural farmhouse and drove 150 miles to the University of Minnesota library in Minneapolis to obtain the latest book by the young Swedish poet Tomas Tranströmer. When Bly returned home that evening with a copy of Tranströmer's The Half-Finished Heaven, he found a letter waiting for him from its author. With this remarkable coincidence as its beginning, what followed was a vibrant correspondence between two poets who would become essential contributors to global literature. Airmail collects more than 290 letters, written from 1964 until 1990, when Tranströmer suffered a stroke that has left him partially paralysed and diminished his capacity to write. Across their correspondence, the two poets were profoundly engaged with each other and with the larger world: the Vietnam War, European and American elections, and the struggles of affording a life as a writer. Airmail also offers remarkable insights into the processes of