note taken on the thread post.

It's one search string per line in the txt file (I clean up the domain name down to just the word ie abc.com to abc).

I have both type of email message file, 1) one single file containing multiple messages and 2) 50000 individual email message in .eml format.

The problem with the search, it doesn't seem to run all the search string contains in the txt file against the target file. It seems only a few lines of search string is used.