Insult through mail even after previous report

IGN: GIMOTTI/Insung/Hongseol
Reason: Insulting me through mail once again even after my previous report: https://freestylersworld.com/showthr...nsult-Spamming
Proof: https://imgur.com/vmz9AWh
Is there really nothing I can do to stop him? I can /ignore mails

I will give him a 48 hour mute and a warning. If he keeps going further I will take more severe actions.