You are getting copies of all system emails - which means they have been sent to your delegates. This is because the 'BCC admin' option on System email settings is ON, and set to your email address, or because your email address is entered in the 'BCC other' setting. 

If you don’t want to receive these copies, go to 'System email settings' on the Setup page and switch the BCC admin option off, or remove your email address from the 'BCC other' setting.