Do I have to mail anything if I e-filed my PA state taxes

No, if you e-filed your Pennsylvania state tax return you do not need to mail anything. You can keep a copy of your tax return as well as any schedules/ forms and save for your records.

I think this answer is NOT always correct.  Pennsylvania requires you to mail out-of-state returns to get the credit for those out-of-state taxes (schedule G-L)

it send it was accepted how do i find it

Where do I mail the tax return to PA after my e file was accepted by PA and I am filing non-resident of PA tax return?  Thanks!

If you are filing a PA non -resident return then you should not be showing a credit for any other states. PA is not a reverse credit state. Thus, you would not need to mail them a state return.

Here are the PA mailing addresses, since you asked. 

@Nicole_Song_2015