Idea behind the junk emails to either "Unsubscribe" or "Spam", need to stop from keep coming back. Yahoo's reputation is at PAR.
To elevate above PAR level, the algorithm must work to support for SPAM and Unsunscribe folders
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Hi there. Sorry to hear about the issue. We do have some pages that might be assistance here, hope they help: https://help.yahoo.com/kb/manage-spam-mailing-lists-yahoo-mail-sln28056.html and https://help.yahoo.com/kb/stop-spam-junk-mail-yahoo-mail-sln26427.html.
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Amul Patel commented
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