The girlfriend of England star Jack Grealish revealed: "They said, 'I hope you get cancer and die' or 'I hope your whole family dies'.
"They say, 'I hope the next time you're in the car you crash it and die, I hope after Wembley you die'."
Model Sasha, 25, found herself bombarded with hate during the Euros while she was cheering on Jack, 25, and his Three Lions teammates.
Speaking on her YouTube channel, she said: "I was receiving 200 death threats a day. I'm not exaggerating when I say that.
"I had so many messages every single day. I still get them now, all day every day."
'I HOPE YOU GET CANCER AND DIE'
Sasha — who was targeted by trolls on TikTok and Instagram — joined the debate around the accountability of social media firms as she labelled the platforms "toxic".
She said: "Things have obviously blown up over the Euros, but I never thought in a million years it would ever be this bad.
"It just kind of blows my mind how nasty people can be for no reason whatsoever.
"I've always been quite a strong person, I've always been very good at blocking out people's opinions. But it's on a whole other level."
She added: "It's just crazy. It's the nasty messages about my appearance, people's opinions. What are you all doing? It's embarrassing.
"You hear people talking about trolling, but I never realised how bad it actually was. The scary thing is, it's young girls.
"I'd go on these girls' accounts who have sent me stuff and they're 13 or 14. It's so sad. I try to put it down to age but then I think when I was that age I never sent a message like that.
"I think it's so toxic, social media, and it's really sad these generations have grown up thinking that it's OK to say things like that.
"Why are you doing it? Please ask yourself why.
"If you're one of those people who goes out of your way to make a fake account or to send a horrible message, wishing someone was dead or talking about their appearance, or talking about their personal life, why, what are you getting out of it?"
'TOXIC' PLATFORMS
Sasha said: "It was a real s*** time, it was actually horrible, and I was feeling so anxious . . . it was not nice at all.
"I didn't ask for any of that, didn't ask for anything to be put out there, but it's out there, isn't it, and I'm just going to continue to carry on as normal."
Sasha's revelations come after Jack's England teammates Marcus Rashford, 23, Jadon Sancho, 21, and Bukayo Saka, 19, were subjected to racist abuse on social media after missing penalties in the Euros final defeat to Italy last month.
At the time Home Secretary Priti Patel said online giants "can no longer ignore some of the appalling, vile, racist, violent and hateful content that appear on their platforms".
Sasha first met £100million-rated Aston Villa star Jack — a Manchester City target — at school in Solihull, West Mids. The pair reunited in June.
The couple had kept their relationship under wraps, but she was spotted supporting him at Wembley during England's Euro 2020 games.
The model is not the only Euros wag to have received death threats.
Spanish striker Alvaro Morata's wife Alice claimed one social media user wished cancer on her family, while another allegedly told Alice her kids would have heart attacks.
It came after Morata, 28, missed a penalty in his nation's semi-final shootout defeat to Italy.
Instagram have launched an investigation into Sasha's comments, and say they are "committed" to keeping the platform safe for everyone.
A spokeswoman added: "No one should have to experience abuse or harassment, and we don't want it on Instagram.
"We encourage people to turn on Hidden Words, a tool which means that no one has to see abuse in their comments or DMs.
"We also strongly recommend that people report behaviour like this to the police, so we can support them in their investigations."
TikTok confirmed they had removed comments highlighted by The Sun, and added that their community guidelines make clear this behaviour is not acceptable.
They encourage users to report any behaviour they believe violates their code.
One troll wrote: 'Help me plan the murder of Sasha'