For a basic case it would; however I also drop certain combinations by default (/.*\.blackhole@/), prioritise certain mail (synology boxes, and services/people I am waiting on are aliased to a specific mailbox which vibrates my phone), aggregate other mail (todo's go to their own mailbox for example), and offer a disposable mail mailbox for my partner.

I was perhaps a tad simplistic with my initial description; I didn't want to bog it down with the detail.

In addition the implementation of catch alls on most services tend to circumvent blacklists (which I would like to do on receiver email address, not sender) and to catch mail destined for deliberately independent mailboxes.