819.01(e) Email Address 
The application must include the applicant's email address and the email address for the applicant’s qualified U.S. attorney, if one is appointed in the application. 37 C.F.R. §§2.21(a)(1), 2.22(b), 2.23(b). See TMEP §803.05(b) for more information about the email address that may be listed for the applicant.
No additional fee will be required if the email address is amended to correct an inadvertent error.