Duplicated emails in Inbox and Spam lists of Inbound Messages

We have completely disabled are anti-spam plugins because too many legitimate emails were ending up on the spam list. But now that it’s disabled, we still have many emails ending up on both the Inbox and Spam lists. Is there a way to prevent this?

Also, is there a way to export the spam list? (Currently this seems to only be a function available to the Inbox list).