I received an answer from the pa tax website folks. They said that yes, it is a requirement to mail in 1099R forms (if they have PA tax withheld) after eFiling with TurboTax. They said that they could be emailed to this email address: [email address removed] using the form (as a cover letter) found here:
https://www.revenue.pa.gov/FormsandPublications/FormsforIndividuals/PIT/Documents/dex-93.pdf
