contact me immediately

Short and to the point. And all rubbish.  Mr Tung wants to take money from you not give it to you.  Delete the email.

contact me immediately for details as regards the transfer of
$19,500,000.000 to you. this money initially belongs to a client who died
and had no next of kin in his account-opening package. in other to achieve
this, I shall require your full name, and telephone number to reach you.
Most importantly, a confirmation of acceptance from you after which I
shall furnish you with the full details of this transaction

Please treat as urgent and confidential.

Ho Chen Tung.