If you move messages to [Gmail]/Spam, it should report them as spam. https://support.google.com/mail/answer/77657?hl=en https://support.google.com/mail/answer/7

If you move messages to [Gmail]/Spam, it should report them as spam. https://support.google.com/mail/answer/77657?hl=en https://support.google.com/mail/answer/77657?hl=en