>Who are these people that, having bought some sneakers already, get a email about other sneakers into their nearly bottomless inbox full of junk (presumedly, given they don't avoid these kinds of marketing messages) will actually notice it amongst the noise and then actually be compelled to buy additional shoes they wouldn't have otherwise

They exist, I just think it's stupid to build your business around them.

https://www.cnbc.com/2019/07/17/sothebys-sells-sneaker-colle...

https://www.youtube.com/watch?v=zWSGN0Er18E

https://www.youtube.com/watch?v=Fw9_tB1tzT4

https://www.sacbee.com/sports/nba/sacramento-kings/article23...