Read Me First

The original idea is from
https://medium.com/@samyakmoon855/send-email-notification-using-spring-boot-part-1-synchronous-approach-311d80620a8e

https://medium.com/@samyakmoon855/send-email-notification-using-springboot-part-3-asynchronous-approach-using-rabbitmq-adebf0477a2a

Html Mime

The original idea is from https://rkumar0206mnirks.medium.com/send-email-using-javamailsender-b61480311102

Swagger

http://localhost:8080/swagger-ui/index.html