Although the email was sound like scam, but what I know is, there is such things as below exist when doing online commercial transaction.

Buyer want to buy item from Seller. But both of them are afraid of scam, so bank is the middlemen who can act as guarantor.

Buyer have to make payment to the bank first, and bank will hold the payment. Bank will informed Seller that, the payment was safe, and now is waiting the Seller to send items, after the items was sent or reach (I not sure how the bank prove the seller has sent it, but there is a way). After confirm, then the bank will proceed the payment to Buyer.

I don't mean the email is true or fake, but the best way is actually call the official bank number to confirm it, sometimes the email may be TRUE as it may written by the PA from the manager.