I really like the concept here. Jack's message in its brevity is perfectly rendered -- an insight into a time he still thought he could die. Ianto reading Jack's message in a bottle feels intimate, yet distant, something very fitting for the early stages of their relationship.
Author's Response: Thank you! Although, by that point I'm pretty sure Jack was well aware of his immortality. He knew he'd come back, but he wouldn't be able to go back to Estelle. Better she should think him dead than find out the truth.