Jenkinsfile with e-mail

Jenkinsfile

pipeline {
    agent any
   
    stages {
        stage('Build'){
            steps {
                echo "Running job: ${env.JOB_NAME}\nbuild: ${env.BUILD_ID} - ${env.BUILD_URL}\nblue ocean: ${env.RUN_DISPLAY_URL}"
            }
        }
    }
    post {
        failure {
            mail to: 'notify-list@example.com', from: 'jenkins@example.com',
                subject: "Example Build: ${env.JOB_NAME} - Failed", 
                body: "Job Failed - \"${env.JOB_NAME}\" build: ${env.BUILD_NUMBER}\n\nView the log at:\n ${env.BUILD_URL}\n\nBlue Ocean:\n${env.RUN_DISPLAY_URL}"
        }
    }
}

thank you, this is very well explained and presented. exactly what I needed.
Note: You can also add "${currentBuild.fullDisplayName}" and "${currentBuild.currentResult}" for niceness.