Click E-mail & IM.
Click Configure in the right pane.
In the Spam protection is enabled pane, click Advanced.
Click E-mail Toolbars in the left pane.
Verify a checkmark is present in the box beside the email client in which you want the toolbar to display.
If the toolbar is already checked in SpamKiller/Anti-Spam and the toolbar is not visible, see the appropriate solution below to re-register the specific plug-in DLL for your email client.
Note: This issue does not occur in Outlook Express or Windows Mail (The Microsoft Windows Vista version of Outlook Express).
Solution for Outlook
Click Start, Run, type CMD, and click OK.
Note: For Windows Vista users, you must open a command prompt with administrator privileges. Click Start, Find, type CMD, right-click Command Prompt and select Run as Administrator.
Type CD %ProgramFiles%\McAfee\MSK (For Windows Vista 64-bit, use CD %programfiles(x86)%\McAfee\MSK) and press ENTER.
Type REGSVR32 MSKOLPLG.DLL and press ENTER.