No, in our software the email address assigned to a user cannot be changed.
Why can't I change my email address?
The email address is a unique identifier of a user in our system. For security and data integrity reasons, it cannot be subsequently changed.
What can I do if I want to change my e-mail address?
If you would like to use a different email address, we recommend that you create a new user account with the desired email address. You can then transfer the relevant data or information to the new account.