Jenkins pipeline email notification

Jenkinsfile

# Plugin - Email Extension Plugin

def notifySuccessful() {
  emailext (
      subject: "SUCCESSFUL: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]'",
      body: """<p>SUCCESSFUL: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]':</p>
        <p>Check console output at &QUOT;<a href='${env.BUILD_URL}'>${env.JOB_NAME} [${env.BUILD_NUMBER}]</a>&QUOT;</p>""",
      recipientProviders: [[$class: 'DevelopersRecipientProvider']]
    )
}

def notifyFailed() {
  emailext (
      subject: "FAILED: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]'",
      body: """<p>FAILED: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]':</p>
        <p>Check console output at &QUOT;<a href='${env.BUILD_URL}'>${env.JOB_NAME} [${env.BUILD_NUMBER}]</a>&QUOT;</p>""",
      recipientProviders: [[$class: 'DevelopersRecipientProvider']]
    )
}