Roundcube lets you read and send mail in the browser without installing Outlook or Apple Mail.
- Open
https://yourdomain.com/webmail(or Webmail from cPanel). - Sign in with the full email address and its mailbox password.
- Choose Roundcube if asked to pick a client.
- Use the inbox, compose, and address book as you would in any webmail app.
To change the mailbox password: cPanel → Email Accounts → Manage.
For phones and desktop apps, prefer IMAP with the settings under Connect Devices on that mailbox.