YouTuber P2istheName Dead at 26

P2istheName -- a popular YouTuber -- has died ... TMZ has learned.

The online star -- whose real name is Philip Enewally -- was found dead on Friday in a mailroom, according the Los Angeles County Coroner. Details are quite sparse at the moment -- but we know the coroner's investigation is ongoing.

TMZ spoke with his mother on Saturday ... and she confirmed he died Friday night and asked that everyone please respect the family's privacy as they grieve. She directed fans to his channel to mourn.

Fellow YouTuber COLETHEMAN shouted out his late friend after word spread ... posting about him on X and remembering he was always kind and provided content creation advice to help Cole improve his own…