Watch Hate Mail for Free: How to Stream the Movie Online at 123Movies. . Hate Mail is an epistolary play something like Love Letters, with two actors reading letters and other correspondence, but it's a little wilder and more hysterically funny. It tells the story of Preston, a spoiled rich kid who meets his match in Dahlia, an angst-filled artist. Their worlds collide when Preston sends a complaint letter that gets Dahlia fired from her job, and then there's no turning back. The play stays with their increasingly crazed correspondence as they move from hate to love, and then right back again.