In modern applications, email communication is crucial for user notifications, confirmations, and system alerts. Many Spring Boot developers opt to use Google as a mail server due to its reliability and ease of integration. However, sending emails from a Spring Boot application can be tricky, especially with the security constraints of Google’s SMTP service. In this article, we’ll explore how to send emails from a Spring Boot application using Gmail as the SMTP server, including code examples, demo results, and tips for avoiding common pitfalls. Let’s dive into the process, explaining each part step by step while ensuring that you’ll have a working example by the end.