Not to spam, not to junk – just rejected outright.

A TXT record that lists which mail servers are authorized to send email on behalf of your domain.

These lists are frequently used as the foundation for sophisticated phishing campaigns. AI-powered tools can now analyze these text-based databases to create hyper-personalized attacks .

Using a password manager ensures that a breach at one site (e.g., a small forum) doesn't hand over the keys to your primary email.

Are you looking to to a list like this, or are you trying to clean up an old contact file? Create a Google Account - Computer