Jenkins email-ext plugin not sending mail

Question

I have Jenkins version 1.480.3 installed on my machine and Email-Extention Plugin 2.30.2.

Test mail from \"Manage Jenkins\" section works fine. When I add editable email

Answer 1

Sometime after 2.66, if the From field is not set in the project, it doesn't seem to be falling back to the system email address. I believe this ticket is tracking the issue. https://issues.jenkins-ci.org/browse/JENKINS-63522