Just received this email for a flight booked yesterday.
Congratulations, the flight you booked on March 07, 2018 is eligible to qualify for the 50% Airline Bonus benefit. To review your trip details, please log on to your account at americanexpresstravel.com.
Explore all the benefits of your Business Platinum Membership
When you use Membership Rewards® Pay with Points for all or part of an eligible fare below, you can get 50% of those points back later. To learn more about this benefit and others on your Card, please visit open.com/businessplatinum.
There are two types of eligible fares:
1. First and Business Class tickets with all airlines available with American Express Travel
2. Any fare class with your selected qualifying airline
Thank you for your Card Membership, we hope you have a wonderful trip.
American Express Customer Care