Steps to resolve:
- Copy in MailUtils.class under /WEB-INF/classes/com/floristpro/annot/utils/ in their root (create folders if needed)
- copy in MailUtils2.class under /WEB-INF/classes/com/appflorist/utils and remove 2 from filename
- /WEB-INF/lib/ - remove "mail-1.4.1.jar" file
- add in "javax.mail-1-6-2.jar" there
- restart and test