
            BCC <string>
      BEFORE <date>
      BODY <string>
      CC <string>
      FROM <string>
      HEADER <field-name> <string>
      KEYWORD <flag>
      LARGER <n>
      NOT <search-key>
      ON <date>
      SENTBEFORE <date>
      SENTON <date>
      SENTSINCE <date>
      SINCE <date>
      SMALLER <n>
      SUBJECT <string>
      TEXT <string>
      TO <string>
      X-GM-RAW <string>
DELETED 
DRAFT
FLAGGED
NEW
RECENT
UNANSWERED
UNDELETED
unseen
