[MM3-users] General question mailman3: message sender acceptance "always"

I received one mail from a sender who's not a member for moderation (=ok).

Mailman2 had the moderation option "allow this sender to sender further mails" (I call this: to add this sender to the additional "white list" of white-listed addresses.)

I could not find such an option (in the moderation dialog) in Mailman3 (only "accept" or "reject" and "discard", but "accept and add to white-list = accept always").

Is it a bug or feature?