Is there an email address for TurboTax Support?

No.  Only one way to contact them or post your questions here in the public user forum.

Contact Customer Service
5am-5pm Pacific Time
Monday-Friday
https://support.turbotax.intuit.com/contact/

What is the Turbo Tax phone number
https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632

Or this:

https://twitter.com/TeamTurboTax

or

https://www.facebook.com/turbotax