Can i download and file my own tax return by mail?

[VolvoGirl]

Yes.  How to mail a return from the Online version

https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online...

Be sure to attach copies of your W2s and any 1099s that have withholding on them.  You have to mail federal and state in separate envelopes because they go to different places.  Get a tracking number from the post office when you mail them for proof of filing.

[SweetieJean]

But see this:

Taxpayers Who Filed Paper Returns Could Wait 6 Months for a Refund (businessinsider.com)