Filtering Mail in Apple Mail for spam - with a specific name and subject line

You can set up a run that if the Subject contains WibGM it will be deleted and moved to the Trash mailbox. You can set the Trash mailbox to delete the emails after 1 day, week or month or when shutting down the Mail app. Or you can empty the Trash manually within Mail.

Note: rules only work in the Inbox so if emails are sent to the Junk mailbox the rules will not apply.

Yes, you can still do it. Create a rule like this:

That should do the trick. Check the Full Headers to make sure they are not spoofing the from name.

You can copy the full header and paste it in your text editor. Then do a search for "from" and see what pops up. Spammers can be quite sneaky in spoofing the from name as other info.

Also log into https://www.icloud.com/ and log into it with Apple ID! Go into your Mail there and from the go to Mail! In Mail goto 'Preferences' and Rules in drop-down and click the add to add a Rule to all your Apple devices!