This script removes duplicate entries from a list. It was designed to process a list of e-mails, but will work with any list of values (one value per line). When evaluating values, case is ignored.
The JavaScript Source: Miscellaneous: Remove Duplicates from Email L
Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Command-s). The script is yours!!!