How not to receive "Still interested in this score?" spams?

I hate when companies send unsolicited e-mails without my consent after registering to the site. MuseScore is spamming me with "Still interested in this score?". I joined a few days ago, and they have already sent me two of these spam e-mails without an "unsubscribe" link. How can I disable it? I checked the "notifications" section of the settings, but I cannot find an entry for this kind of spam. Is it "Weekly digest"?