jenkins-util/vars/sendEmail.groovy

#!/usr/bin/env groovy

def call() {
    if (!env.GIT_COMMITTER_EMAIL) {
        env.COMMITTER_EMAIL = sh(
            script: 'git --no-pager show -s --format="%ae"',
            returnStdout: true
        ).trim()
    } else {
        env.COMMITTER_EMAIL = env.GIT_COMMITTER_EMAIL;
    }
}