A while back, I operated the postfix mail servers for a B2B app. AFAIK the only way to get email from these servers was to work at a company using our product, add your email to the app, and explicitly opt into getting notification emails. And even then, the only emails they'd send were transactional emails; the marketing dept did their own unrelated thing. In spite of this, we semi-regularly found our servers blacklisted for allegedly sending spam. Since then I don't just trust by default when people add things to blacklists.
All this is to agree with the sibling comments; maybe your priors give you a particular default view, but it's not universally shared, and even so Google rather suffers from a long history of banning people in ways that sure look arbitrary and then refusing to say anything about it to anyone, which rather assists in the banned party looking sympathetic.
All this is to agree with the sibling comments; maybe your priors give you a particular default view, but it's not universally shared, and even so Google rather suffers from a long history of banning people in ways that sure look arbitrary and then refusing to say anything about it to anyone, which rather assists in the banned party looking sympathetic.