What is the primary purpose of blacklisting in email management?

The primary purpose of blacklisting in email management is to identify and note domains and addresses that are associated with sending spam. This practice is crucial for maintaining a clean and safe email environment. When a domain or email address is blacklisted, it means that it has been flagged for sending unsolicited and often harmful messages, which helps protect users from potential threats such as phishing attacks, malware, or other malicious content. By managing these blacklists, email systems can automatically filter out spam before it reaches the inbox, improving the overall effectiveness of email communication and reducing clutter. This proactive approach enhances user experience and security by preventing unwanted messages from compromising the integrity of email correspondence.