It's difficult to tell apart a genuine email from spam.
That's why the elderly people are easily tricked by them.
ご質問ありがとうございます。
"It's difficult to tell apart a genuine email from spam."=「本当のメールとスパムを区別するのは難しい。」
☆ "spam" の代わりに "junk mail" とも言えます。
"That's why the elderly people are easily tricked by them."=「だから、高齢者はよくスパムに騙されるのだ。」
ご参考に。
It's hard to tell a real email apart from a fake one.
It's hard to distinguish a real email from a fake one.
「本当のメールと見分けがつかない」は英語で「It's hard to tell a real email apart from a fake one.」と言います。「tell apart」や「distinguish」のほかにも、「tell the difference」も言えます。
スパムメールと本当のメールと見分けがつかない。だから高齢者は騙されやすい。
It's hard to distinguish a real email from a fake one. That's why elderly people are easily tricked.