Send an email on Jenkins pipeline failure

Question

How can I add to a Jenkins pipeline an old-style post-build task which sends email when the build fails? I cannot find "Post-build actions" in the GUI for a pipeline. I know that I can wrap the entire build script try/catch, however, this seems ugly when the build script is large and continues to send emails even when the job was aborted manually. I would like to achieve the same functionality as with the previous email-ext based post-build action.

try {
    // Do sth
} catch(e) {
    emailext body: '$DEFAULT_CONTENT', 
        recipientProviders: [
            [$class: 'CulpritsRecipientProvider'],
            [$class: 'DevelopersRecipientProvider'],
            [$class: 'RequesterRecipientProvider']
        ], 
        replyTo: '$DEFAULT_REPLYTO', 
        subject: '$DEFAULT_SUBJECT',
        to: '$DEFAULT_RECIPIENTS'
    throw err
}

Answer 1

This answer worked on my Jenkins ver. 2.96.

Jenkins pipeline email not sent on build failure - Stack Overflow

 pipeline {  
     agent any  
     stages {  
         stage('Test') {  
             steps {  
                 sh 'echo "Fail!"; exit 1'  
             }  
         }  
     }  
     post {  
         always {  
             echo 'This will always run'  
         }  
         success {  
             echo 'This will run only if successful'  
         }  
         failure {  
             mail bcc: '', body: "<b>Example</b><br>Project: ${env.JOB_NAME} <br>Build Number: ${env.BUILD_NUMBER} <br> URL de build: ${env.BUILD_URL}", cc: '', charset: 'UTF-8', from: '', mimeType: 'text/html', replyTo: '', subject: "ERROR CI: Project name -> ${env.JOB_NAME}", to: "[email protected]";  
         }  
         unstable {  
             echo 'This will run only if the run was marked as unstable'  
         }  
         changed {  
             echo 'This will run only if the state of the Pipeline has changed'  
             echo 'For example, if the Pipeline was previously failing but is now successful'  
         }  
     }  
 }