The Raven- Poe

The main character in The Raven, a man, is sitting in his house, thinking, depressed over his dead lover, Lenore, and nodding off. Then he hears a tapping on his door, he goes to it, hoping it is she, when he finds nothing there. There is then a tapping on his window and when he opens it a raven comes inside. When he asks the raven its name it replies, "Nevermore." As he continues to ask it questions it only replies, "Nevermore." He thinks that it is sent from God to help him forget Lenore or it is an evil prophet. He asks if she is in heaven and the raven only says, "Nevermore." He is angered and tells it to leave since it is not helping him with his loneliness but the raven states it's only word, "Nevermore." The man now feels that the raven will never leave and that his soul will forever be stuck in it's shadow, cast by the lamp, forever.
The raven is something from the afterlife ("Night's Plutonian shore") that was sent to the man to help him understand that Lenore will be gone forever. The man fears, in the tenth stanza, that this too will leave him as his other friends did but the raven ensures that he will not. Words like Disaster, Despair and Hope are capitalized leading to believe they are names. "so, when Hope he would adjure,/ Stern Despair returned, instead of the sweet Hope he dared adjure-/ That sad answer, 'Nevermore.'" When the man expresses his hope that Hope, or Lenore will return, yet he only got Despair, the name of the raven; the raven tells him she will not come back, "Nevermore." The raven could be seen as an evil presence that brings the man frustration because he will never leave or as a comforting presence that helps him heal over Lenore's death and will not leave him in his time of loneliness. Either way, the man's soul is stuck with the raven, nevermore to leave.
Is the raven some sort of death since the mans soul is stuck with him?