If you would like to change the standard email layout or add for example some footer in every email you have to change the email templates.
To do that: Stop the Red5/OpenMeetings-Service Goto: $Red5_HOME/webapps/openmeetings/WEB-INF/lib/openmeetings-templates.jar Unzip: openmeetings-templates.jar (this is a usual ZIP file, you can rename it to openmeetings-templates.zip unzip, edit the files, zip it again and rename it to
