This is the email I received for all my transactions and they were all swiped at the register.
Thank you for using your registered American Express® Card ending
in xxxxx to Shop Small® on Small Business Saturday®!
We are currently processing your transaction in order to determine if
you qualify for the one-time $10 statement credit associated with the
American Express Card Member Offer for Small Business Saturday.
If your transaction qualifies for the American Express Card Member Offer,
you will receive a $10 statement credit from American Express within 90 days.
This seems to be the standard email this year. The emails came right after the transactions were completed.