After you file

Nope, not if they have been accepted.  Then there is nothing to mail in.  You are done.  That's the benefit of Efiling.  Just print a copy for yourself.

 

How to get a copy after filing

https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-get-a-copy-of-a-return-i-filed-thi...