Hi, I received an email from turbotax that I finished the return but did not file. I think I filed, but now I am not sure. Please advice.

You would have received an email confirmation that you have filed your tax return, see the link provided below for more detailed information:

• How do I know if my return was filed using NETFILE and received by the CRA?

Once you have confirmed that you have Netfiled your tax return and are still receiving emails, disregard them; they are most likely just part of an email campaign to ensure everyone can get their taxes filed on time.