SPAM emails
I have a domain name email. I kept getting daily SPAM emails to this address for many years. I searched everywhere. How are they getting my email? The only thing I used it for was a free Spotify account – but all notifications were switched off on Spotify. I changed my address on Spotify to a dump gmail address and the SPAM immediately ended on my domain address *and* on Google. My conclusion: Spotify is selling my domain name address. Google has a better SPAM filter that knocks out these emails. If you are using Spotify, use a gmail dump address as your login.