Good catch. You can see that this domain is clearly not blockchain.com
It is very important to double check addresses of online wallets, exchanges, and even this forum (there are known phising sites taht are perfect clones of bitcointalk.org).
Most important now is to block that sender and make a throw away e-mail for all those websites that you need to sign in. Don't share your personal email with any website, as your e-mail is a great vector of phising.