I don’t know if I direct deposited or mailed my return?

[DoninGA]

Check e-file status - https://ttlc.intuit.com/community/return-status/help/how-do-i-check-my-e-file-status/01/25538

Since the only way to mail a tax return is for you to download, print, sign, date and mail the federal tax return in a stamped envelope to the IRS, you would know if you did that.

[Anonymous]

If  you mean you aren't sure if you selected to have your income tax refund direct deposited into your bank account  or  if you selected to have it mailed to you, you can go back and review the "File" section of your return to see what you selected. 

If you did not enter any banking information to have it direct deposited into your account, the IRS will mail you a check for you approved refund amount.