We often get the question: "How do I know if my company is on a SPAM Blacklist?" Followed by "If my company is on a SPAM blacklist, how the heck do we get unlisted?  

There are over a hundred SPAM blacklists – private corporate spam firewall and private blacklists, but luckily there are a few tools that can help you check most of them quickly. We've included here a handy reference with the sites that you can use to check your blacklist status. We've also highlighted several of the more prominent SPAM blacklists.

First and foremost – we'll stress that our series on checking and removing your email servers from a blacklist assumes that you're not spamming or at a minimum – you've first taken appropriate corrective steps to clean up your email list and sending practices. 

What you need to know to check Blacklist status