Sorry Turbo Tax can't tell you anything about a mailed return. The only way to know for sure it they got it is if you got a tracking number from the post office when you mailed it. Since you don't have a refund did you have a tax due? Did you mail a check? Did they cash the check? Or are they suppose to debit your bank account? Or how did you pay it?
The IRS accepts all mailed returns. If they have a question on it they will mail you a letter.
