Adding Direct Deposit info after the taxes have been filed

My situation is a bit different, then in most cases. I am a US citizen living abroad. I do not normally file taxes, as income I make abroad, is usually much less then $12,200. I have used TurboTax to e-file my taxes for 2019 but since I didn't owe any taxes nor did I expect any refund, I was not asked to enter Direct Deposit information. At least I did not see where to enter it...
Is there any way after my Tax return has been filed and accepted by IRS that I can change the Direct Deposit information ?    if No,
Will IRS be able to mail my check to the address outside of US ?