Editor notification of announcment

Hi there
I’ve had a problem with email notifications. When I sent out a new announcement to all users, a notification of each email was sent back to the editor. This means he received over 1000 confirmations of the announcement that was sent to each user. How do I disable this?
Please note that the workflow>emails>notification disable button cannot be unchecked as some others can - the function is disabled even when I am logged in as editor.
Additionally, it seems I cannot disable editors and guest editors receiving confirmation of a new submission without also preventing the authors receiving a confirmation. Has anyone found a way around this?