Psychology says people who put their date of birth or year in their email address aren't necessarily making a risky choice on purpose. Many people include numbers such as their birth year or birth date because their preferred email address has already been taken. Others use these numbers because they are easy to remember or because they represent an important part of their identity. Psychology does not view this habit as having a single meaning. Instead, experts suggest that personal experiences, digital habits, memory, and identity all influence how people create email addresses. The behavior also highlights the importance of balancing convenience with online privacy.
Email addresses have become part of everyday life. People use them for work, education, banking, shopping, healthcare, and communication. Since many email usernames are already taken, users often add numbers to create a unique address.