-Flashback, 1998, Malfoy Manor-
Lord Voldemort's soul was already 2 horcruxes short of extinction, according to Harry Potter, who, at the time, wasn't aware he was one of the two left... since Voldemort couldn't hack into Harry's brain as easily to avoid his own destruction, he prepared a potion, which he served Bellatrix as breakfast.
She had been overwhelmed with joy the Dark Lord himself had brought her breakfast in bed, and in his young, formerly handsome appearance too!
Voldemort wasn't there to fool around with her, like she had thought: the milk was laced with a potion packed with psychedellic mushrooms muggles used to hallucinate.
He'd mutated them magically for the drinker to be able to see solutions into the future and alternative posibilities of the evolution of a situation, because tarot cards were too muggle and mainstream for the job.
Besides, he'd never seen a deck he liked enough to give the honor of his fate's prediction.
Bellatrix's eyes rolled backwards as she went into voodoo mode and predicted the arrival of the Internet: Voldemort should make a mobile horcrux,
-Lace electricity with the thread of soul you have within your own body, my Lord! The body will become a phoetus if destroyed, but your 18 year old self shall thrive digitally... like your 16 year old self in that diary, but you will have millions within your reach in a smartphone's worldwide web, the digital social network! !
Bellatrix proceeded to laugh like a maniac until she passed out. Voldemort gave Nagini the rest of the non-laced breakfast and headed to his own chambers within the Malfoy mansion to prepare a plan... he hadn't understood what Bellatrix meant by "world wide web" or "social digital network", but if he tortured the right people, he'd surely find out.
His appearance was already returning to that of a human snake. He enjoyed this transformation, as any vestige of his muggle self was too much of a disgrace to look at-
BAM
He'd been concentrated spiting about and had walked into Draco, who, upon realizing who he'd just bumped into, looked terrorized and white as a polar inferi. Since this was about the future, maybe Draco could have a slight idea, but he'd be careful not to reveal too much... the child was still upset his dad had been sent to Azkaban.
-Draco, do tell me something.
-Y-yes my L-l-lord? -Draco observed the big brown eyes become once again red, the nose fading into slits... he covered his head with his hands.
-No need to fear, boy. What is the world wide web?
Draco looked up from his hands, confused.
-A muggle thing, my Lord.
-What is it about?
-I don't know, m-my Lord! It's new, but I h-have only overheard about it in H-hogwarts.
-upon realization he might've put the entire school in danger, he added something as fast as he could- From... nobody I would be friends with! I don't remember who! Someone who took a muggle studies class!
This implied the Dark Lord would have to contaminate his soul with muggle filth... temporarily.
-Tell them to give me polyjuice potion, Draco. I'm going to London.
Draco wanted to vaporize away from this world. Had he just caused the newest unexplained freak "accident" in London? He just couldn't win, could he?
-May 1998, Bellatrix's chamber in Malfoy Manor-
My dear Bellatrix,
In case my body gets obliterated, I shall leave the last part of my soul in the digital world;
I shall take physical shape very fast when I find a soul or multiple souls to feed on.
Await my next return and pass on the muggle thing called Internet a username:
TomMarvoloRiddle.
Trust you forever,
Lord Voldemort
The lucky post owl is confused, as both receptor and sender have passed away. Receptor's body was found, and sender's has disappeared or become a phoetus... Or has he?