[dqv]

I see it as the exact opposite. If organization sends me marketing from marketing@ and order details from orders@, I easily have a way to quickly delete or classify marketing@ as spam. I can't do that if they send everything from the same email.

[frosted-flakes]

Yeah, but what if they send you marketing from Ivan, and also Sara and John?

[dqv]

    from:(organization) -from:(orders@organization)

Select all, mark as spam, delete.