There are 2 ways to access your mailbox. You can type either mywebsite.am/webmail or mail.mywebsite.am in your browser in order to access Webmail service and log in to your email account. Otherwise you can enter your cPanel, go to Mail Accounts, choose the email account that you wish to access and click on the Access Webmail on the right of that account. After that you will be prompted to choose from three different interfaces to use: Horde, Squirrel Mail or Roundcube and then you can start using your email account.