When generating an email alert on a failure, I would like to highlight the failure message/exception all by itself in a separate section. If this error is already logged to console, it tends to repeat when including the tail of the console log using BUILD_LOG macro and reduce the readability of the email (I prefer crisp and concise emails). I can avoid this duplication if there is support for an additional parameter to drop the specified number of lines from the tail. This is also useful to remove boilerplate messages that always exist at the end of a build.