The keyword query is an example of an advanced search string, often called a "Google Dork," designed to filter out common public email providers and find specific text-based data from the year 2021. Breakdown of the Search Query
Analyzing the results from -gmail.com -yahoo.com -hotmail.com -aol.com txt 2021 in real-time back in 2021 produced interesting trends: -gmail.com -yahoo.com -hotmail.com -aol.com txt 2021
Disclaimer: This article is for educational purposes regarding search syntax and data history. Always comply with local privacy laws when handling personal data. The keyword query is an example of an