If the state did not receive your state return then you need to file it by mail. Print it, sign and date it in ink, and mail it to the state.
When you e-file your federal return you will receive two emails from TurboTax. The first one will say that your return was submitted. The second email will tell you if your federal return was accepted or rejected. If you e-filed a state return, there will be a third email to tell you if the state accepted or rejected your state return.
If you owed tax due to the state, your only proof that you paid the state will be your own bank or credit card record.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**