I know this is not a good solution, but until Apple solves this problem (if ever), I find it the only practical solution.īTW, Spotlight also does not search mail correctly despite having attempted to re-index my drive in the two different methods suggested - by adding and removing from the Privacy tab in Sys Spotlight Prefs AND by using the mdutil commands in Terminal. On the MacAir I have now abandoned Mac Mail and installed Thunderbird mail which runs perfectly. This machine has absolutely no problems with Mac Mail or anything else. I am also using a Mac Pro ( 5,1) mid 2012 which I have not upgraded to High Sierra (and probably never will) which runs Mac OS 10.12. I have spent literally many many days on this problem. I unfortunately upgraded my MacBook Air (11 inch, 4,) to Mac OS 10.13 (High Sierra from 10,12) and Mail search immediately stopped working. I have tried all of the suggestions listed here and in every other post relating to the failure of Mac Mail to search correctly. Hi Classysailing and every other frustrated Mac mail user: