It looks like I was quoted by MarketingProfs: Here's how it happens. "If that partner works with a whole bunch of people sending email," explains Al Iverson in a post at the Spam Resource blog, "[and] if that template is out all over town, then there's a pretty good chance that somebody has sent emails using that template to poorly permissioned lists, causing spamtrap hits, spam complaints, and so forth."
"Spam filters that use content fingerprinting, meanwhile, see the same message coming from your company and lump you in with the abusive senders."
Jerry, thanks for your question. Though, I think a point is being missed here. There is NOT a list I can give you saying "avoid this tag, or avoid this image," or whatever. No such list exists; and it's impossible to compile one.
The thing that these filters catch is commonality. If your content has different variables in common with other messages tagged as bad (for whatever reason), then your messages get tagged as bad, too. What does commonality mean? It can mean a whole bunch of things, and nobody publishes a list of the exact variables that are checked. It probably is all of the following things, and more:
- Your from domain.
- What domains you link to.
- The domain where images are hosted.
- What images you use.
- What HTML template you use.
- What unsubscribe footer you use.