The Ebony Mail is a Daedric artifact created by the Daedric Prince Boethiah. In appearance it looks like an ebony suit of armor, or often simply a cuirass. It can either be medium or heavy in weight. The artifact grants its wearer resistance to fire and magical attacks, magical protection from physical blows, quieter movements and the ability to poison enemies who get too close. The artifact was created before recorded history by Boethiah, and it is Boethiah alone who determines who should possess the Mail and for how long a time.
The Ebony Mail was uncovered in Black Marsh by the Eternal Champion during the Imperial Simulacrum. Just before the events of the Warp in the West, an unknown agent of the Blades in the Iliac Bay area summoned Boethiah in a search for power. In return for killing an innocent spellsword who had displeased the Prince, the agent was gifted with the Ebony Mail from a worshipper of Boethiah. During the play A Hypothetical Treachery, a group of adventurers (Malvasian, Inzoliah, Dolcettus and Schiavas) recover the Ebony Mail from the legendary Eldengrove of Valenwood. In the end, Inzoliah alone is left alive and sells the artifact to the king of Silvenar.
In 3E 427, the Nerevarine was sent by the Tribunal Temple at the request of Archcanon Tholer Saryoni to make a pilgrimage to Mount Assarnibibi, where Molag Bal oversaw the ninety-nine lovers of Boethiah, who gave birth to Almalexia. Upon completing the pilgrimage, the Nerevarine received the Ebony Mail and brought it to Tholer Saryoni. The archcanon wouldn't accept it, saying it would be put to better use by the Nerevarine. The Nerevarine later sold it to Torasa Aram, who put it on display in the Mournhold Museum of Artifacts.
Sometime after the end of the Great War, around 4E 180, the former member of the Blades, the Warrior, came across the Ebony Mail in their journey. The method of its acquisition is conflicted, however. Some claim that it was obtained from the plane of Oblivion known as the Abyss, while others believe it was looted from a chest obtained from a conflicted location.
In 4E 201, Boethiah tasked the Last Dragonborn with assassinating the Prince's previous champion and his group of bandits. The Dragonborn retrieved the Ebony Mail from the corpse of the ex-champion.