Email blacklist checker

An email blacklist checker is a tool that helps you determine if an email address or domain is listed on a blacklist, which is a database of known spam senders or malicious actors. Here are some popular email blacklist checkers:

1. Sender Score: A free tool provided by Return Path that checks your IP address and domain against various blacklists.
2. MX Toolbox: A free online tool that checks your domain's MX records, DNS records, and blacklists.
3. Blacklist Check: A free tool provided by Mailchimp that checks your IP address and domain against various blacklists.
4. Spamhaus: A paid service that provides real-time blacklists and allows you to check your IP address and domain against their databases.
5. Open Relay Blackhole List (ORBL): A free tool provided by the Internet Society that checks your IP address and domain against their list of open relays.
6. SpamAssassin: A free, open-source spam filtering system that includes a blacklist checker.
7. Blacklist Check by Mailgun: A free tool provided by Mailgun that checks your IP address and domain against various blacklists.
8. Email Blacklist Checker by Whois.net: A free tool provided by Whois.net that checks your IP address and domain against various blacklists.

To use an email blacklist checker, simply enter your IP address or domain name into the tool, and it will scan the databases of known blacklists to see if your IP address or domain is listed. If it is, the tool will provide information on the specific blacklist and the reason why your IP address or domain was listed.

Here are some common blacklists that email blacklist checkers may check against:

• Spamhaus
• SORBS (Spam and Open Relay Blocking System)
• ORBL (Open Relay Blackhole List)
• DNSBL (Domain Name System Blackhole List)
• RBL (Real-time Blackhole List)
• SBL (Spamhaus Block List)
• XBL (Spamhaus Exploits Block List)

By using an email blacklist checker, you can:

• Identify and resolve issues with your email sending infrastructure
• Improve your email deliverability and reduce the risk of being flagged as spam
• Comply with anti-spam regulations and best practices
• Protect your brand and reputation from being associated with spam or malicious activity