Check your domain against 25+ major email blacklists instantly — Spamhaus, Barracuda, SpamCop, SURBL, and more. Being blacklisted silently kills your email deliverability. Find out if you're in trouble in seconds.
We'll email you instantly if your domain gets listed on any blacklist — free.
Email blacklists (DNSBLs — DNS-based Blackhole Lists) are real-time databases of IP addresses and domains known to send spam. Receiving mail servers query these lists before accepting email. If you're listed, your emails get blocked or sent to spam — without any notification to you or your recipients.
High bounce rates, spam complaints, sending without authentication (SPF/DKIM/DMARC), or your IP being previously used by a spammer. Even legitimate senders can end up blacklisted.
Being on Spamhaus or Barracuda can cause 80%+ of your emails to never reach inboxes. Many receivers silently drop mail from blacklisted domains without bouncing it back.
Most blacklists have a removal request form on their site. Fix the root cause first (stop spam complaints, set up SPF/DKIM/DMARC), then submit the delisting request with evidence.
Use double opt-in, maintain list hygiene, authenticate with SPF/DKIM/DMARC, monitor complaint rates, and warm up new IPs gradually. Lume handles all of this automatically.
Lume monitors your reputation 24/7, sets up proper authentication, and keeps your domain off blacklists — automatically.