The undo window: pause a card up to 15 minutes before it sends
A configurable pause with a visible Undo — accidental sends and spoiled surprises, caught.
In Settings → Sending & member self-service, set the Dispatch Safety Net to 5, 10 or 15 minutes. From then on, every finished card — scheduled, "send now", or a quick solo card — holds for that window with a countdown on the dashboard and an Undo button.
Undo parks the card safely (nothing is lost — release it whenever you're ready); letting the clock run out sends it normally. Set it to 0 to send immediately again.