The JavaMail API (http://www.oracle.com/technetwork/java/javamail/index-138643.html) was used for this project. https://javaee.github.io/javamail/
This project is using icons from font awesome (Font Awesome by Dave Gandy - http://fontawesome.io). CDN: //maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css