empty subject (no subject) in email with grails mail plugin

When sending email using the grails mail plugin, the email subject always ends up empty with (no subject)

this is a known problem. see the link
http://www.nabble.com/Grails-mail-plugin-0.5-:-subject-and-body-always-empty-td20008519.html

The problem happens if you have groovyws-all-0.4.jar in your lib directory. groovyws-all.jar also has javax.mail.* classes packed in there. The fix is as simple unjaring, remove the javax.mail package and rejar it.

hope someone finds this helpful... spent a good half day researching this