The email claims the recipient was among a group of randomly selected people to participate in an ongoing Mega Millions drawing and then solicits personal and financial information from the recipient. The estimated cash value is $199 million.
The jackpot has been growing since July, when some California office workers won $543 million.
There was no victor in Tuesday's Mega Millions lottery draw, meaning the jackpot is yet another rollover.
The largest USA lottery prize was a $1.586 billion Powerball jackpot paid out in 2016.
From July 27 through October 16, Mega Millions sales in North Carolina raised an estimated $10.6 million for education, the lottery site said.
Of course, more players means a greater chance of splitting the jackpot, and, "If you don't have a ticket, you have zero chance of winning".
However, its second-biggest one of all time for $656 million happened in 2012 before the tweak.
Lottery players will have slightly better odds of winning just one of the jackpots.
Lottery officials are happy to have Friday's record Mega Millions jackpot fueling ticket sales.
Mega Millions is played in 44 states, plus Washington, D.C., and the U.S. Virgin Islands.
One person did receive a $1.9 million prize Tuesday for guessing five of the six total numbers correctly at a Safeway grocery store in San Francisco. "Problem is someone else may be a victor of the jackpot", Odlyzko said. But raising the number of Mega Balls makes it harder to win the jackpot.
State lottery commissions have relied on human psychology and the spirit of optimism to fuel sales.
US lottery sales totaled $77.7 billion in fiscal 2018, up about $5 billion from the previous year, according to La Fleur's Magazine, a publication focused on the lottery industry. The changes made it less likely that any given ticket will win the top prize, but they increased chances of winning smaller prizes.