They work and don't work. Today I received this email from a camera store I purchased from previously. Subject: "we miss you" body: "We haven't seen you in a while! Need to kickstart your inspiration? Our expert staff can get you started. CHAT NOW."

No products, no specials, nothing else in email.

Funny how they're shouting at me to 'chat now' about my inspiration. For me this is newsletters not working. Another bad habit is the full page sign-up prompts seconds after visiting site. Like the cookie consent form pop-up wasn't enough, let's slap them again with newsletter prompt.