Default X-Headers for Premium Filter Classifications

The default values for Premium Filter Classifications when the Premium Filter is enabled:

• Confirmed. Inserts X-Header [X-IMAIL-SPAM-CONFIRMED] with subject prefixed with [SPAM].
• Bulk. Inserts X-Header [X-IMAIL-SPAM-BULK] with subject prefixed with [BULK].
• Suspected. By default no action taken.
• Unknown. By default no action taken.