Email Blacklisting

What is Blacklisting?

A Blacklisting is a list that allows internet service providers (ISP) and other website administrators to block emails or traffic from specific systems. It’s usually those that are known for sending spam and other malicious content.

Normally, a blacklist contains Domains and IP addresses.

Blacklist Categories

Email Blacklisting

What is IP blacklisting?

Every server has an IP address that defines its location on the internet. As for your emails, they are sent from an email delivery service to be sent to the receiving services such as Gmail. If your IP is listed on a blacklist this may be due to the reputation of your ISP (Internet Service Provider) itself.

What is Domain blacklisting?

Domain blacklisting is a degradation in the reputation of the domain itself. Most often this is caused by sending emails that have been classified as “spam”.

 How Domain or IP Get on Blacklists


List of Popular Email Blacklist Check Databases.

For checking your domain listing in the blacklist database here are some of the most popular ones you can look up your IP or domain name in:

  • Mail genius
  • Mail tester
  • Composite Blocking List (CBL)
  • Senderbase
  • Spam and Open Relay Blocking System (SORBS)
  • Spamhaus Block List (SBL)
  • XBL Exploits Block List
  • Spamcop
  • Passive Spam Block List (PSBL)
  • Invaluement
  • Barracuda
  • SenderScore

There are Two Ways to Remove Blacklisting on your Domain or IP.

Self-Service Removal:

Some blacklists have a self-based process. In this service, you have to target only an engaged audience and remove spammy keywords which are in your email body. With this practice, you will get a high open rate. After that, automatically backlisting will be removed on your domain.

Time-Based Removal:

Most blacklists have a time-based process. In this process you have to stop your email activities for the time being (1 week) and for the Higher-level blacklistings may take a longer period of time to be removed.

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