I still need file my 2018 taxes. Can I still send them in electronically w/ Turbo Tax?

[DoninGA]

To complete and file a 2018 tax return using TurboTax you would need to purchase, download and install on a personal computer one of the 2018 desktop editions from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/

A 2018 tax return can only be printed and mailed, it cannot be e-filed.

[Opus 17]

I believe that professional tax preparers can e-file 2018 returns, but that would cost a lot more than using Turbotax.  Turbotax can't e-file a 2018 return, that is a rule imposed on personal tax software providers by the IRS.