Per IRS rules, it IS NOT TRUE that this form can only be mailed.
What seems to be true is that turbotax is the only tax software company who not only won't attach a pdf to their clients return (but has no problem attaching a pdf for the 3rd party billing company they use to deduct the payment owed to them from our return)- they also are thr only ones insisting it MUST be mailed. It's been 4 since the IRS modified instructions. Saying it has to be mailed is a lie at this point.
https://www.irs.gov/forms-pubs/alternative-filing-method-for-e-filed-returns-that-include-form-8915-...
