> Every fashion brand on the planet reengages their customers this way and it works.

I often receive emails from (among other things) fashion brands to which I never subscribed. There are clearly multiple people worldwide who, mistakenly or intentionally, are giving my `firstname.lastname@gmail.com` at checkout or whatever rather than their own.

Every time I receive one of those emails I do two things:

1. Use their unsubscribe link on a private window, connecting with a VPN exit point in their country (or nearby). If asked, I select the "I never subscribed" or "This is spam" option.

2. Mark the email as spam on GMail, rejecting GMail's proposal to unsubscribe instead (as I already did).

I have no mercy and feel no guilt at reducing their email server's reputation. The only exceptions I make are the rare emails that ask me to confirm "my" subscription before sending "me" their stuff. That I respect, and I just ignore and delete.