I want to filter my emails using the header
X-Comment, which appears in some of my messages. I added a filter to do this (using the "Customize" option) and tried to run it on my inbox, but nothing happened.
After some reading online I found this comment on a bug report regarding this issue, so I repaired the folder (right click, "Properties", "Repair Folder") and tried again. Still no results.
When searching for the header using the advanced search, I also get no results.
I also tried this with some other headers like
MIME-Version just to be sure and got the same results.
Does anybody have an idea how to fix this?