Free Email Blacklist Checker
Scan your domain or IP against 50+ major email blacklists including Spamhaus, SpamCop, and Barracuda.
What are Email Blacklists?
Email blacklists (also called DNSBLs or RBLs) are real-time databases of IP addresses and domains known to send spam or malicious emails. Email servers check these lists to decide whether to accept, reject, or flag incoming emails.
Being listed on a blacklist can severely impact your email deliverability, causing your emails to land in spam folders or be rejected entirely.
Major Blacklists We Check
Spam-Focused
- Spamhaus (SBL, XBL, PBL)
- SpamCop
- Barracuda Reputation
- SORBS
- UCE Protect
Security-Focused
- Spamhaus CSS (Security)
- SURBL
- URIBL
- Invaluement
- JustSpam
Common Reasons for Being Blacklisted
- Sending to purchased or harvested email lists
- High bounce rates (sending to invalid addresses)
- Too many spam complaints
- Compromised server sending spam
- Sending from a shared IP with bad senders
How to Get Delisted
- Identify the cause — Check server logs for unusual activity
- Fix the issue — Clean your list, secure your server
- Request removal — Visit each blacklist's website
- Monitor — Check again in 24-48 hours