Get your taxes done using TurboTax

You're welcome.   There's also a form called "Electronic Postmark".  If you saved a PDF, it may be in the PDF.  Or you can go into Forms Mode, and in the left column list of forms you can choose Electronic Postmark to view, print, save, etc.  In that left column, it will likely be near the bottom of the list of the Federal reforms and before the state return forms list.