Auto PM on X posts?

[JTrollerb123]

Hi,

Since upgrading from IP.Board from v3 to the latest v4 (I was running outdated version for quite some time), I lost the auto PM on X posts plugin that worked flawlessly on the versions prior to v4.  In browsing the current plugins available for v4, I came across the below mod but there's only 1 review and 1 comment of which it says it doesn't work on the latest version.  Does anyone know of an alternate solution that is currently working and maintained?  Thanks