You can do this by navigating to GENERAL > Settings > General > E-mail & Domains > tab Emails in the left menu of the back office. Proceed as follows:
- Click the email address of which you would like to change the password.
- You will be taken to the email settings edit page. One of the available options is the Password field. Tick the check box next to it.
- An input field appears, containing your current password. Enter the new password and click Save & continue at the right at the bottom of the screen.
- Your new password has now been saved and is ready for use.