Can I use turbotax free edition to file a 2nd return using the same email address?

[DoninGA]

Using the TurboTax online editions you can have up to 5 unique user ID's associated with one email address.  To complete and file a second tax return using the online editions you must create a new account with a new unique user ID.

See this TurboTax support FAQ for information - https://ttlc.intuit.com/questions/1894512-how-do-i-start-another-return-in-turbotax-online