Change it in the system to make all our portal notices (i.e. intake forms / statements etc) come from our admin email address (i.e. contact@practicename.com) rather than the individual email addresses each person uses to login.
Per Theranest: "There's not currently a way to set one specific email address for Client Portal invites and forms to come from. Depending on the staff member signed in and doing the sending, that will be the email address the message will come from -- their email address on file in TheraNest."