The easiest way would be to use a groovy SCRIPT and do a loop on the
build.previousBuild until you find the build you are looking for. If you
want to use it in the email subject, you'd want to have the last line in
the script be the content you want.
${SCRIPT, script="last-successful-build-info.gr
Hello,
I have set email notifications using Email-ext plugin when job status is
success or failure. When there is continous repated failure, I wanted to
add last build successful time in the email subject. Any help is
appreciated.
Eg:
build# 4 - Fail- 1/13/2013 - Add "last success