For using this jar:
include the context in your application context.
2.Create the following bean in your application context for property file as in test folder:
classpath:mail.properties
3.Autowire the EmailUtils,create the email message as : EmailMessage message = new EmailMessage(sender, toList, ccList, bccList, subject, body, "text/html",filePath,fileNameForAttachment, mailTitle);
4.For example refer the junit test.