https://ttlc.intuit.com/questions/2403338-how-do-i-change-from-mail-to-e-file-in-the-turbotax-cd-dow...
For TurboTaxOnline: https://ttlc.intuit.com/questions/3399683-how-do-i-change-from-mail-to-e-file-in-turbotax-online
