Resolved over 1000 wrong emails sent due to bug in mass email

Affected Version
2.3.1 RC6


sent mass email but later realized that dhru is sending email to wrong template which is NOT saved anywhere, my message title for the template was seasons greetings and emails were sent with website down and over 1000 emails has been sent which is totally wrong and inappropriate, I know you are going to close this ticket saying NOTABUG then forget about it but this need fixing.