It is a paradox that despite the technological advances we are witnessing today, privacy and data security on the Internet are often compromised to a large extent. Often, individuals' personal data is stolen or companies' financial data is stolen by elements who could misuse it. It is in this scenario that data privacy has become an important issue for computer users around the world. Data privacy becomes more important when working in a public domain like the Internet. This document will suggest some of the precautions that an ordinary person needs to take to maintain personal privacy and ensure data security while working with emails. AnalysisThe advent of the Internet changed the way technology was used to support businesses and professionals. personal needs of users around the world. People did not realize that the Internet would establish itself as a powerful facilitator of the needs of the common man in such a short period of time. However, the same services offered by the Internet can also be a potential source of dissemination of our private information without us even being aware of it. Email security threats can be of many different types. Email security can be compromised by spoofing, identity theft, modification attacks on existing messages, and impostors [Kangas, 2004]. Hackers can use any or all of these methods to break into a user's computer. Email Security Email is one of the most potent sources for our data leakage because most people are complacent in strengthening their email security. Email software is also the most used software by computer users. Therefore, any vulnerability of popular email software can be easily exploited by unscrupulous elements to gain access to private data of many people. Therefore, it is very important that everyone uses secure email clients to receive and send emails. There are many reputable email clients available, and the company that makes them releases security patches from time to time. All these patches from the company must be installed to close any software vulnerabilities. It must be understood that the computer architecture used for exchanging emails is not very secure and does not guarantee much privacy to users. On the other hand, there are software such as "sniffers" available on the market that can effectively capture data intended for other computers.