Spammail

I received this spam email:

Carlos Benson bahri@benvcard.com
Bitcoin deposited: €2,304,987.84
Greetings
Your BTC wallet has been replenished with 40BTC, making a total amount of
of (€2,304,987.84) as requested by you. Please log in with the details below to confirm your BTC balance.
bitsbot.net
ID: 21562666
PW: suc2689
Confirm your account balance.

Why did this get through the spam filter?