For most tax returns, you can choose to efile your return or you can choose to print, sign and mail your return. Most tax payers choose to efile their return. If you efile your return and it is accepted, you do not mail anything to the IRS or state. If either of your returns are rejected, you can fix the reason for rejection and resubmit them or you can print, sign and mail them. If you choose to mail them, you must do it yourself. TurboTax does not do it for you. 

how can i send efile ?

Log in, open your return and go through the FILE tab, through the 3 steps all the way to the very end and hit the big orange Transmit Returns Now button.   

How to Efile

https://ttlc.intuit.com/community/e-file/help/how-do-i-e-file-my-personal-individual-tax-return/00/2...

Or does your account say Ready to Mail?  

How to change from Mail to Efile

https://ttlc.intuit.com/community/e-file/help/how-do-i-change-from-mail-to-e-file-in-turbotax-online...