Jack Froese suddenly died in June 2011 aged just 32 from a heart arrhythmia, leaving behind a number of grieving friends and family.
But five months after his death, some of those who were closest to him started receiving mysterious emailâ€™s from his account mentioning private conversations they had had with him just before his death.
The family of the Pennsylvania man say no one had his account password and they donâ€™t believe it was hacked.
In the Daily Mail story, the ghostly emailer is speaking to friends and family of events that happened after his death, but:
Boooo! BOOOOOOO! If you mess around on me, Imma haunt your butt!