Email cleanup

This ruby script reads a CSV export file from MySQL database, and removes lines contained in a dictionary file. Ie: do a XOR between the exported file and a dictionary.

Source files

• emails.csv CSV Export file columns: First name, Last name, Email address, Entity

• emails-dictionary.txt Dictionary: Email address, one per line

Produced file

• emails-cleaned.csv CSV file, with following columns: First name, Last name, Email address, Entity