If you called in to Amex using the number on the card for certain things like fraud, for a while they would then text you a code in a message that says: “Amex

If you called in to Amex using the number on the card for certain things like fraud, for a while they would then text you a code in a message that says: “Amex Fraud Free Msg: Your requested code is: xxxx. We won't call to ask for it. Don't share it. Call ######## if you didn't request it. Reply STOP to opt out.” You wouldn’t be the requesting this text and code, the person on the phone would. And it says don’t share it. Maybe I was hoodwinked but it seemed really legit although in principle I refused to give it. It seems so scammy, but I’d called the number on the back of the card.