SUMMARY So with 11.50 version of cPanel (or around there) came new changes to the way customizing system generated email notifications (disk warning usage/ mail warning usage) emails go out. Old way is caput and no longer works, which I had working great. https://documentation.cpanel.net/display/1150Docs/Notification+Templates The new way is similar process (copy original location to new custom location so they don’t get overwritten etc. etc..) I updated both the DiskWarning.html.tmpl and the DiskWarning.subject.tmpl templates accordingly. ISSUE The DiskWarning.subject.tmpl is working as intended. But no matter what I try, it does not pick up the DiskWarning.html.tmpl changes. I even tried just editing one letter, nothing else. Still not working. It is not seeing that template for whatever reason. SERVERS/VERSION BACKGROUND Tried on two different cPanel VPS servers with cPanel build 11.50.0 (build 30) and same issue. Only the DiskWarning.subject.tmpl is being applied by cPanel. Server Info: CENTOS 6.6 x86_64 / cPanel build 11.50.0 (build 30) Is this a bug? Has anyone got the DiskWarning.html.tmpl changes to apply?