Your username is set up with the email address used when an account is initially created and can only be changed by Postalytics. The username identifies your account and is linked to processing files and other internal workings. If there is a need to change the username, such as the username/email is for a person who is no longer working with your organization, the Postalytics Technical Team will need to update it here on the back end to ensure all of the links remain intact. 

You can change your password at any time on your Profile page by entering the new password, confirming the password, and saving your profile settings.