No Signup Needed
Blacklist Checker
Instantly scan 50+ global blacklists to ensure your emails reach the primary inbox.
Comprehensive Domain Blacklist Analysis
A domain blacklist (or RBL - Real-time Blackhole List) is a database of IPs and domains suspected of sending spam. If your domain appears on these lists, your email deliverability will plummet, and your messages will be automatically routed to the spam folder. At Email Marketing Guide, our Elite Blacklist Checker provides a robust way to audit your technical reputation across dozens of providers.
🚩 Major Lists We Scan
- Spamhaus (SBL/XBL): The gold standard of blacklists.
- Barracuda: Used by thousands of enterprise firewalls.
- SORBS: Targets various types of spam and compromised servers.
- SpamCop: Uses spam traps to identify abusive senders.
🛠️ How to Delist
- Identify the Source: Scan your domain to see which specific list flagged you.
- Fix the Cause: Check your copy with our Advanced Spam Word Checker.
- Check List Hygiene: Scrub your data using the Email List Cleaner.
- Request Removal: Visit the RBL's website and follow their delisting instructions.
Why Blacklist Monitoring is Essential for Email ROI
You can use the most advanced UTM Link Builder and calculate incredible margins with an Email ROI Calculator, but none of it matters if your server is blocked. Blacklists act as the "gatekeepers" of the internet. Periodic checks ensure that you catch deliverability issues before they impact your quarterly revenue. Our tool identifies common "Spam Trap" triggers that cause automatic listing.
IP vs. Domain Blacklisting: Know the Difference
IP blacklisting targets the specific server sending the mail, while domain blacklisting targets your actual business identity. Our tool allows you to check both. If your IP is listed but your domain is clean, your ESP (Email Service Provider) may be at fault. If your domain is listed, your internal sending practices probably need adjustment. Ensure your identity is solid with a professional Branded Email Signature to build trust with recipients.
The Technical Lookup Process
Our tool simulates a real-time DNS query to standard RBL servers. When you enter a domain, the engine identifies the IP address and checks for a record on servers like zen.spamhaus.org. A returned record of 127.0.0.2 indicates a listing. This technical breakdown helps you understand why your emails might be bouncing or landing in the Promotions tab.
Conclusion: Maintaining a Clean Network Reputation
Deliverability is earned through technical precision and consistent hygiene. By combining blacklist monitoring with our Subject Line Analyzer, you create a 360-degree defense against spam filters. Stay ahead of the RBLs and keep your sender reputation elite in 2026.