Reset email account password via cPanel :
1. Access to cPanel via portal (http://domain.name/cpanel) with login credentials.
2. Once enter, proceed to click on "Email Accounts" under Email section.
3. Find the email account that you wish to modify password. Click on MANAGE.
4. Under 'Manage An Email Account', you can create your own password or you can generate password (Note: Please remember your password for the next login).
5. Scroll down the page till you reach 'Update Email Settings'. Click on the tab 'Update Email Settings' and you are all set.
6. Your password has been reset. You may now access your webmail via http://domain.name/webmail.