As @ xmasbaby0 mentioned above, TurboTax does not mail it for you. You would have to do it. However, if mail service from your country is suboptimal, another option for filing from out of country is to use a private delivery service (FedEx, UPS, or DHL Express), if those are available in your country. I don't know what the rates are, but it could be expensive depending on what level is chosen. If you decide to do that, you have to do it yourself; TurboTax does not do it.
NOTE: When using a private delivery service, it's required to use the special IRS street address for such deliveries (see first link below). If you do that, be sure to use a delivery service product that has tracking and get a receipt showing the date it was sent.
When filing from outside the USA, filers choosing to send by private delivery service use the Austin TX street address for the delivery.
https://www.irs.gov/filing/submission-processing-center-street-addresses-for-private-delivery-servic...
IRS Designated Private Delivery Services
https://www.irs.gov/filing/private-delivery-services-pds
