So I had recently got approved for filing my taxes but I just recieved in my mail another W2 from my old company how will I be able to file my other W2 if I had already filed?

[MinhT1]

If you have already filed, you have to wait to see if your return is rejected or accepted.

If your return is rejected by the IRS, you can add that W-2 and correct other errors, then re-file your return.

If your return is accepted, you'll need to amend your return. 

To amend your return, please follow the instructions in this TurboTax Help topic.