The advatage of using this over Mint's reports are that Mint reports don't show subcategories or allow you to filter out categories. Optional parameters: -startDate 1/1/2001 -file "c:\path\to.csv"
Example output:
To export transactions in Mint click the "Export all ## transactions" link at the bottom of the transactions page.
Or click this link when you are logged in: Export Mint Transactions