How to subscribe to email notification in specific currently running Jenkins build?

Question

I have a Jenkins build running. Is there a way to subscribe to notification of just that build, that I am interested in?

I am not interested in other builds of the same job.

Can that be done in a pipeline?

Answer 1

1. You can put the emailext plugin inside a script step with if

I found some examples here: How to do simple if-statements inside a declarative pipeline in Jenkins

2. You can use the when step