Another day, another corporate newsletter that I never signed up for using emotionally manipulative language in their unsubscribe form.

No, we're not "breaking up". We were never "together". You're a marketing copywriter who has never met and will never meet the vast, vast majority of people who don't want you spamming their inbox. If you want to anthropomorphize this, fine: it's not a relationship, you just followed me home from the store. Go away, seek help.