Pre-send Script

The pre-send script is a feature which allows you to write a script that can modify the MimeMessage object prior to sending. This would allow adding custom headers, modifying the body, etc. Predefined variables include:

msg - the MimeMessage object which can be modified

logger - a PrintStream and will write to the job's log.

build - the build this message belongs to

cancel - a boolean, which when set to true will cancel the sending of the email

Jenkins > Manage > script

if (build.changeSet.emptySet) cancel=true;