Change Email Account Password with Webmail
Access your webmail by going to yourdomain.com/webmail in your browser:
At the login box, enter the full email address of the email account you want to change the password for. And enter it's corresponding current password.
And click Login
When you log in, along the left side you will see a menu option for Settings:
Click Settings and then click the Password option:
Enter the current password for the email account in the Current Password field. Then enter the desired new password in the New Password and Confirm New Password fields:
Click Save to update the password to this new password:
The bottom right corner of the page will display a green Successfully Saved message to inform you that your password change has been made.