Adding Rules to the Black & White List :
Click on the SETTING button, then click on the Black & White List link.
Follow the following steps :
STEP 1:
Select the correct Action for the rule: Reject, Accept, etc.
Use the Mark as Spam action to identify messages that should be moved to the Spam folder for review instead of just being rejected.
STEP 2:
Select the Item on which you want to base the rule: Sender, Header (includes Subject), Body, etc.
STEP 3:
Specify the Function: Contains string..., Starts With String, etc.
STEP 4:
Type in the text String which is unique to this rule you want to create.
If you selected Contains String, separate multiple keywords in the string with a semi-colon. For example the string "Xanax; X(a)n@x; xanaax" covers most of the ways spammers have spelled, or masked, that particular medicine in subject lines.
STEP 5:
Identify whether or not the rule is Case Sensitive (upper- and lower-case sensitive), usually the rule will not be case-sensitive.
STEP 6:
When finished, click on the Add button.