This script will be run after sending the email to allow
acting upon the send result. The MimeMessage variable
is msg, the SMTPTransport transport, the session
properties props, the build is also available as build
and a logger is available as logger. The trigger that
caused the email is available as trigger and all triggered
builds are available as a map triggered.
You can set the default post-send script here and then use
${DEFAULT_POSTSEND_SCRIPT} in the project settings to use
the script written here.