Delete query in the ‘before update’ of form

I have a problem sending data to a group of people in my Outlook address. When the email is being sent, all the other entries are included in the documents being sent in the email. I am trying to build a form in which I input the data and after clicking the submit button, an email in XLS format is sent to a number of people that I have selected after the event code has enabled the data to be entered. I am also wondering if it is necessary to a have a delete query in the ‘before update’ of form? Can you help me with the code for doing this if I should have the delete query?
