I have recently installed Windows 10 on my laptop and use Yahoo mail. Tabs on screen are a little different but do not have a Spam tab. How can I get this please?
Are you using a desktop mail client? Windows 10 Store App? Yahoo's Website? If you're using Yahoo's Website for email, what browser are you using vs. what browser did you use on your previous OS?
It is a bit difficult to answer your question without all the details. You may find it helpful to register for an account, return to this thread, and provide a bit more details so we can assist you with your issue.