Purify 2.0 Posted 3/17/2008 at 18:45 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Purify 2.0 adds the Purify Lexical Analysis Tool (PLAT). Using an English dictionary, and an algorithm that examines the content of an email using 5 parts of speech, the PLAT will examine the email message content to determine what words it considers "meaningful" in the message.