Exception in thread "Timer-0" java.lang.NoClassDefFoundError: javax/mail/Messagi
ngException
        at listener.MyTimer.run(MyTimer.java:26)
        at java.util.TimerThread.mainLoop(Timer.java:512)
        at java.util.TimerThread.run(Timer.java:462)
Caused by: java.lang.ClassNotFoundException: javax.mail.MessagingException
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1645)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1491)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
        ... 3 more