An easy-to-use java e-mail sender, built on top of javamail.
Require javamail library: https://java.net/downloads/javamail/javax.mail.jar
ZcMailSender.getInstance("smtp_server_address")
.setAuth("email_address", "password")
.setFrom("from_email_address")
.enableSSLwith("sslPort_number")
.send("test subject", "test content", "target email address",true);