title: SpringBoot unknown property in application.properties
body: <p>I've generated a Spring Boot web application using Spring Initializr, using embedded Tomcat + Thymeleaf template engine.</p>
  
  <p>I put this property in my application.properties</p>
  
  <pre><code>default.to.address=nunito.calzada@gmail.com
  </code></pre>
  
  <p>I am using Spring Tool Suite Version: 3.8.4.RELEASE as a development environment, but I got this warning in the Editor <code>'default.to.address' is an unknown property.</code></p>
  
  <p>Should I put this property in another property file ?</p>