Hi Ali,
Thanks for creating this defect. I think there's a bit of confusion here...
The poll-mailbox-trigger plugin ONLY creates new instances of a job, when an email is received. It doesn't (isn't responsible for) notifying (/emailing) senders that the job has failed/passed.
If you want to notify the sender when your job fails/passes, I recommend installing the https://wiki.jenkins-ci.org/display/JENKINS/Email-ext+plugin. It'll allow you to configure the job to send you an email, when the job fails/passes.
You can then use some of the job parameters that are injected by the poll-mailbox-plugin, to send the email back to the sender (see - https://github.com/jenkinsci/poll-mailbox-trigger-plugin#job-parameters).
E.g.

Hope that helps, please let me know if I've misunderstood your problem.
Kind regards,
Nick Grealy
Hi Ali,
Thanks for creating this defect. I think there's a bit of confusion here...
The poll-mailbox-trigger plugin ONLY creates new instances of a job, when an email is received. It doesn't (isn't responsible for) notifying (/emailing) senders that the job has failed/passed.
If you want to notify the sender when your job fails/passes, I recommend installing the https://wiki.jenkins-ci.org/display/JENKINS/Email-ext+plugin. It'll allow you to configure the job to send you an email, when the job fails/passes.
You can then use some of the job parameters that are injected by the poll-mailbox-plugin, to send the email back to the sender (see - https://github.com/jenkinsci/poll-mailbox-trigger-plugin#job-parameters).
E.g.

Hope that helps, please let me know if I've misunderstood your problem.
Kind regards,
Nick Grealy