4.0.0 org.springframework.boot spring-boot-starter-parent 2.6.4 com.example mailSender 0.0.1 mailSender mailSender 1.8 org.springframework.boot spring-boot-starter org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-starter-web RELEASE compile org.springframework.boot spring-boot-starter-mail app org.springframework.boot spring-boot-maven-plugin