What I "love", having been A-Llist+ since its inception is the "Have you booked your hotel/rental car?" E-mails, as if I'd forget. But like the "Book your low fare to ..." E-mails, I just ignore those too. NBD.
But we FFs have to remember there's a lot more of us who don't fly as often as we do, and it's in WN's fiscal favor to send these.