After you file

And one other suggestion

 

Since you have to file 2019 by mail use a mailing service that will track it so you will know that the IRS received it.   Nothing is ever going to show up on the IRS refund site for a 2019 return so the only way you will know it was received is via tracking.   Or if you include a payment with the return, you will eventually get a cancelled check or a bank or credit card statement showing that you paid.   

 

Just be aware that it takes a very long time for the IRS to process mailed returns.

**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**