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 no longer want to receive these copies:

  1. Navigate to the Setup tab and choose 'System email settings' in the lower right menu.
  2. If you see your email address in blue next to 'BCC Other', click it then click 'Delete' on the next page that appears.
  3. Otherwise, turn off the 'BCC Admin' switch or click the blue text next to the 'Admin email' setting and change this address to a different one.