Currently, PW sends emails on behalf of PT (patchtest) without replying the original series' patch. For tracking purposes, it would be much better if the email is a reply of the later.
Request purpose is to include test results email as part of the original patch thread. Currently this is not happening because patchwork is configured to send an email notification when any Patchtest test fails only to a specific recipients list that does not include the mailing list. However, the mentioned email does include the appropriate header that links to the series cover letter or patch, so it will be included in the thread once the mailing list is included in the recipients list.