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ContactTool
Email Blacklist Checker
The email blacklist checker from Truelist lets you instantly check if an email address or domain is blacklisted. This free blacklist lookup tool helps you detect if your email sending reputation is at risk — so you can take action before deliverability suffers.
Why use the email blacklist checker?
Our email blacklist checker helps you scan multiple popular blacklists to detect if your email address or domain is flagged as suspicious, protecting your sending reputation and deliverability.
- Check if Your Email Is Blacklisted
- Scan multiple popular blacklists to see if your address or domain is flagged as suspicious or spammy.
- Protect Your Deliverability
- Emails from blacklisted domains often go straight to spam. Catch issues early and stay out of trouble.
- Monitor Your Sending Reputation
- Make blacklist checks a regular part of your email hygiene routine to avoid unseen problems.
- Troubleshoot Deliverability Issues
- If your open rates drop or emails stop landing, this blacklist lookup tool can help uncover why.
What People Say
Trusted by thousands of marketers, founders, and SDRs
Other free tools from Truelist
Explore our suite of free email tools to improve your email marketing and deliverability.
- Free Email Verifier
Check if an email is valid, deliverable, and safe to send to.
- Email Bounce Checker
Find out if an email address is likely to bounce before you hit send.
- DMARC Generator
Create a valid DMARC record to strengthen your domain's email authentication.
Frequently asked questions
Can't find the answer you're looking for? Reach out to our customer support team.
- What is an email blacklist?
- An email blacklist is a list of IPs or domains known for sending spam. If your address is listed, your messages may be blocked or routed to spam.
- How does this blacklist checker work?
- It checks against known public DNS-based blacklists (DNSBLs) to see if your domain or address appears.
- Is this tool free to use?
- Yes — the blacklist checker is completely free, and no account is required.
- Can I check my entire email list?
- This tool is for one-at-a-time lookups. For bulk monitoring, consider using Truelist's paid plans.
Powered by Truelist
Truelist is a fast, reliable email validation platform built for marketers, sales teams, and developers.
With real-time API access, bulk list uploads, and advanced deliverability tools, Truelist helps you keep your email lists clean and your campaigns converting.