How to Create an Alert which collects all connected Events and Emails Only Once

How to Create an Alert which collects all connected Events and Emails Only Once

Hello,

I am trying to cut down on the number of blank reports I get each day.  I have set-up an Alert for an Unsuccessful Account Validation, Event ID's 4768,4776.  I only want to be informed once a day of the number of Unsuccessful Account Validations to act as a reminder to run the report.  At the moment, I get about 400 emails a minute informing me of someone failing to validate their user account. 

Unfortunately, I am not sure how the 'Number of Occurrences' and 'Occurring within' fields.

Hopefully you can help.  Thank you in advance.
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