Whitelist for spam-catcher?

Hey guys.

Is there any way, through another plugin or settings, to whitelist certain links/words/emails in comments?

Akismet seems very random in how it catches spam, and a lot of the time (but not always for whatever reason) it marks legit comments with a youtube link as spam.

Akismet doesn’t seem to have any settings/whitelist, any fixes that you know of?