Hpw can I find out if my return has been mailed out?

[TurboTaxBrenda1]

If your return has been mailed out- you would of had to click on Print & Mail and actually send your income tax return in an envelop by mail.

If you mean if it has been NetFiled online- then you will need to verify the following

https://turbotax.community.intuit.ca/replies/2864697