Blocking a sender in Yahoo Mail stops their emails from reaching your Inbox. Instead, their messages go directly to your folder (or are deleted automatically, depending on your settings).
To prevent the need for blocking in the future, Yahoo offers "Disposable Addresses" (often available to Yahoo Mail Plus subscribers). This allows users to create a unique, masked email address for signing up for services. yahoo email block sender
Users can block senders using two primary methods on the desktop interface: Blocking a sender in Yahoo Mail stops their