[aflag]

That message is poor UI. If you know what it means, you probably don't care about the possibility of sudo sending an email when you first typed it. If you don't know, you will be worried probably without a good reason to be so.

Nowadays it's even worse than it once was, because now the natural instinct of people is to think that the incident was reported to canonical or ibm. The opposite of how they are supposed to feel about when using free software.

I'd change it to "This attempted was logged" or something like that when that is true. Just so the user is aware that the data they are typing there may be seen by someone else. But by default, in their own systems, that message should never appear, unless they specifically configured it that way.