I just recently noticed that the Capital One email offers now say ‘Single-use’ in the upper right corner. See below screenshot:
I went back through my emails and it seems they started doing this back on probably July 1, 2025. Here’s an email back in June. Look at the upper right. SO FAR, it doesn’t seem like they are enforcing it, but if you have to wait 90 days like me to cash out rewards, that’s A LOT OF TIME for C1 to scrutinize your orders and invalidate cashbacks.
