Originally Posted by
nystateomind
yes, you will only get 1 inquiry but each additional application will be automatically rejected. amex only allows 1 app every 30 days. i tried this multiple times

Absolutely not true. Wife just applied for 3 cards at once. Two of them were approved. One was rejected because it would take her over 4 amex cards.
Also checked, and this was only one pull on her credit history.