No Turbo Tax does not mail it. They only efile it. If you need to mail it you have to print and mail it yourself. Why couldn't you eifle? Did the efile reject? Maybe we can help you fix it and efile.
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.