If you used a mailing service that has tracking then your confirmation that the mail was delivered to the IRS would come from the mailing service. The IRS does not do anything to confirm for you that they received your tax return. The only way to know if the IRS is processing your return is to look on the IRS refund site.
You need your filing status, your Social Security number and the exact amount (line 35a of your 2022 Form 1040) of your federal refund to track your Federal refund:
https://www.irs.gov/refunds
If you are not seeing anything on the refund site by now---many months later-- then chances are that the IRS did not receive your mailed return and you should re-send it. If you send it again, make sure you use a service that will track it for you and give you a confirmation that it was delivered.
**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.**
This answer has been verified for accuracy by an Intuit expert employee
