How can I assign a tracking number to each email account?

how can I assign a tracking number to each email account that will show up on response form automatically to make entering the response on excel spreadsheed much easier than matching email addresses.  I could then just use the number to put info in correct data row on spreadsheet

You can use the Unique ID widget. This widget tracks each submission with a unique serial identifier. Here's a guide: How-to-Add-Custom-Unique-IDs-to-your-Form-Submissions.

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