Sorry but Ready to Mail means you have to actually print out your tax return and mail it to the IRS yourself. So it has not been filed yet.
Or if you did mail it, Turbo Tax will always say Ready to Mail. Turbo Tax doesn't know if or when you actually mailed it. And the IRS doesn't tell them when they receivable mailed return.
You can try to switch to efile
https://ttlc.intuit.com/replies/3985787
