You can put "immiscibly" in your Spam filters. It's under Mail, Block Unwanted Mail, Content Filter. Or under Settings, Spam Controls.
Putting "Immiscibly" into the AOL spam filters does exactly nothing to stop the avalanche of mail from Immiscibly. Because they change the address immediately after "@" ..... AOL just doesn't give a damn. This has been going on for months. Maybe five or six a day. Surely AOL can handle this more efficiently.