jenkins-email-ext.groovy

node('master') {
    checkout(scm: [$class: 'GitSCM', 
        branches: [[name: "*/develop"]],
        extensions: [[$class: 'RelativeTargetDirectory', relativeTargetDir: 'repo1']], 
        userRemoteConfigs: [[credentialsId: 'bitbucket.jenkins', 
        url: 'urlToRepo.git']]],
        changelog: true, poll: true)
    
    showChangeLogs()
    
    //currentBuild.result = 'FAILURE'
  
    emailext(
        subject: 'Deployment',
        body: '${SCRIPT, template="groovy-html.template"}',
        to: 'email@address.com')
}

@NonCPS
def showChangeLogs() {
  def changeLogSets = currentBuild.changeSets
    for (int i = 0; i < changeLogSets.size(); i++) {
        def entries = changeLogSets[i].items
        for (int j = 0; j < entries.length; j++) {
            def entry = entries[j]
            echo "${entry.commitId} by ${entry.author} on ${new Date(entry.timestamp)}: ${entry.msg}"
            def files = new ArrayList(entry.affectedFiles)
            for (int k = 0; k < files.size(); k++) {
                def file = files[k]
                echo "  ${file.editType.name} ${file.path}"
            }
        }
    }
}