I recently unsubscribed from all but one (the account tips) of the Firefox newsletters, because they were sending too much stuff I wasn't really interested in. The next day I get a new Email from them.
Subject: "Was it something we said? crying emoji".
Body: "If you want to go... we won't stop you. [...]"
Footer: "You're receiving this email because [...] subscribed to Firefox Account Tips.
Yeah, thanks for the ~~tip~~ spam.
Felt like going through one of those dark pattern flows that Spotify or Amazon have when you try to unsubscribe from their paid plans, trying to guilt you into reconsidering.