That’s why, for example, affiliate marketers can really have challenges because, if someone sends a lot of spam to promote your URL, other senders can also end up in the spam folder for promoting the same URL. That means that if you send email that includes links which have, in the past, also been found in spammy emails, then the inbox providers will likely consider your email to be spammy also. Notably, the URLs that are promoted (linked to) in your email carry their own reputation. Figure out ways to talk about your subject without suspicious language in your emails… and keep that stuff on your website instead. That makes it hard for legitimate folks in those industries (and others) to get good delivery, but that’s just the reality. It’s pretty easy for inbox providers to decide that emails talking about losing weight and making money (for example) are likely spam. This includes the words and links you put in the body of your email.