Check if your domain or IP address is listed on major email blacklists. Monitor your sender reputation.
Note: This tool checks common public blacklists. Some blacklists may have rate limits or require direct API access for full results.
Email blacklists (also called DNSBLs or RBLs) are real-time databases that track IP addresses and domains known to send spam. Email servers check these lists to decide whether to accept or reject incoming messages.
Most widely used blacklist
Enterprise security provider
User-reported spam sources
Spam and Open Relay Blocking
Anti-spam DNSBL
Multi-level blacklist