This will prevent an email from sending if the content of the email is 'No Entries Found'.

This example blocks out Tuesdays(2) and Thursdays(4) in a date field. Change the numbers 2 and 4 to the days of the week that are blocked out. The numbers must be between 0 and 6 where 0 is Sunday and 6 is Saturday.

Use this code to hide fields from all user types except editors. The field will still be visible in the admin area.