If you need some powerful text retrieval software, considering installing one of the oldest such application around: dtSearch. A 30 day evaluation version is available here: http://www.dtsearch.com/evaluation.html
- dtSearch can be set to filter out certain types of files.
- it can process Outlook data files.
- there are options for boolean searching, proximity fuzzy searching, stem searching, and synonym searching
- dtSearch will bring you directly to the hits in each document showing them in context.
Note that the dtSearch Text Retrieval Engine is utilized by kCura's Relativity software.