noun
email spreading rumors; false information email
Refers to chain emails or messages that spread unverified rumors, hoaxes, or false stories, often with a sensational or alarming tone. Common in the context of internet hoaxes and misinformation.
チェーンメールでデマメールが回ってきた。
A rumor-spreading email came around as a chain mail.
その話はデマメールだとすぐにわかった。
I quickly realized that story was a hoax email.