Provide a method of locking a list

[NH_Realtor]

We have 36 lists- there are a couple of us who manage the account. Sometimes a person may choose "select all" on the list and send out to everyone. It would be great to have the ability to lock or 2 step selection process. So if someone "selects all" any list that has a lock on it will have to be double checked to make sure it isn't just arbitrarily being added. Thank you.

[Hannah_M]

Great idea, thanks for posting!

[ACWS]

This would be very helpful! Please take this into consideration.