How can I change my mailbox password?

Changing passwords for any mailbox can be done through the Megabit Cloud | Web Hosting control panel.

Log in to cpanel.yourdomain.com and select Manage Hosting.
Select Manage on the hosting package containing the mailbox you wish to change the password.
Choose Email Accounts under Email.
Locate your mailbox, enter a new password, and click Update. Your new password will have been successfully saved.

Just so you know, you cannot recover your old password for the mailbox. We do this to increase your security.