You could go one step further and remove the Outlook provider, if you're not using it. Go into Add-Remove, click on Avast then on Modify (or however it's worded). Untick the Outlook provider and save your changes. You'll then be told to reboot, since the resident providers have been changed.
And if you ever do need Outlook, just add it back in the same way, no big deal.
(Edit) As a P.S., your mouse-over status should then show one less provider total, with all of them now running.