Generally - to trigger an action on the promotion failure.
      Sending a mail is a most obvious example.

      Right now a promotion is a sequential process. Any failure stops it. So Email-ext step is executed only on a promotion success and only for "Success" trigger.

          [JENKINS-8965] Send mail on a failed promotion

          Kirill Evstigneev created issue -
          R. Tyler Croy made changes -
          Workflow Original: JNJira [ 139109 ] New: JNJira + In-Review [ 175019 ]

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            kirill_evstigneev Kirill Evstigneev
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