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If what you wish to do is modify the contents of your email alert, you can simply go edit your form, and click Email > Notification
Next, you will notice a window will appear with the template of teh body of the email that you usually receive. You can edit the body there and once you're done, click the Finish button and save your form.
However, if this is not what you're trying to modify, please provide us more details.
Thanks and warm regards.