~snip~
i also dont know, let me know please
You should have read the thread. The majority of the posts here give you the answer already.
Here is a short summary of those posts:
... if they do, this is a scam.
DO NOT fall for either scam... delete and/or report the email as spam.
I receive like 3 or 4 emails just like that every day, all rubbish scam.
Scam ... Ignore it
they are all scam, i got tons of them. in crypto world scam is everywhere, just be careful, do not share anything
Don't fall for scams. Noone is going to give you something for free. Neither will a "20% return investement with 100% security" really give you profits.
Use your common sense and avoid anything which "could be fishy".