Macro to stop workbook from being emailed

Hi.
I this main workbook which i'm always afraid of it being accidentally emailed and sent to the wrong hands.

Is it possible that when the send button is hit a macro will run which will stop the workbook from being sent via email?

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If you use outlook you can write a macro to check on the attachment filename before sending.

Is there a way that excel can stop the workbook from even being shown as an attachment to the email to begin with?
Meaning, that outlook won't even get the chance to show the email with the attached file?

You are asking excel to do something it was not built for. If what you want to do is on Email then you need to work on the application that handles Email.

I hear.
K, thank you.