If you want to change the password of your email account, then you can do this by the following steps:
1. Log into your cPanel account.
2. In the "Email" section, click on the "Email Account" Icon.
3. Click on the "Manage" Button next to your email address for which you want to update the password.
4. Now you will get the option to generate new Password for your Email Account. 
5. Enter your new password or use a password generator
6. Click on the "Update Email Settings" button.
Congratulations, your email password has been successfully changed and now you can access your email using your new password!