Blacklist Checker
Check if a domain or IP is listed on major email blacklists. Being blacklisted can prevent your emails from reaching inboxes.
What is an Email Blacklist?
Email blacklists (DNSBLs) are databases of IP addresses known to send spam. Mail servers check these lists in real-time to decide whether to accept or reject incoming email. Being listed can cause your emails to bounce or land in spam folders.
How to Get Delisted
- Identify the cause — compromised account, open relay, or spammy content
- Fix the issue — secure your server, remove malware, stop sending spam
- Request removal — most blacklists have a self-service delisting process
- Monitor regularly — re-check periodically to catch new listings early