Error sending email to multiple addresses when one is invalid
I just filed this as JENKINS-9006:
This problem is present in both email-ext and the regular Jenkins email
notification. If there are multiple recipients and one of them is in
error, the email is not sent. So if one email in a long list becomes
invalid for whatever reason the rest of the addresses do not receive the
This should be re-coded to send to whatever addresses are still valid.
That is what most email sending agents do.