You've probably got a certain level of trust or delegated authority, but you want input and you're giving your leadership the opportunity to steer the decision if they feel they need to, and you're balancing that against the urgency of action.

By very direct analogy, I think there's a dictum in the US military to the effect that a bad plan executed quickly can be better than a perfect plan that's executed too late.

ETA: ... and you're potentially speeding the decision/action by giving leadership the opportunity to confirm/redirect on receipt of the email.