What is an Email Denylist?

A Denylist can be used, for instance, to prevent access to websites that include content that is improper for children or that may be dangerous or contain malware. A system administrator or other responsible party normally maintains and updates the Denylist.

The majority of the denylists are made public, but there are some large ISPs that keep them private. Web browsers restrict users from accessing denylisted websites, while email providers may block the emails generated by denylisted domains.

Denylists are crucial for defending your computer and network against malware, spyware, and other dangers. Denylists offer a list of known dangerous URLs, IP addresses, websites, and other content that needs to be restricted. This helps guard against hostile actors infiltrating your network and compromising your PC.

Denylists can also aid in lowering the volume of spam and phishing emails that are delivered to your mailbox. You can protect your computer and network from harmful attacks by blocking these dangerous sources.