All of a sudden when I use spotlight to find old emails it goes from 8/2013 back to 1/2013 and I can't find any of the emails in between. This just started yesterday. Before that I could always find old emails through spotlight. HELP!!! I use spolight all the time to find old emails I need to look at again.
Rebuild the Spotlight index. If you try to search now from the magnifying-glass icon in the top right corner of the display, a pulsing dot will appear in the icon. When the dot disappears, the indexing is complete.