Mailboxes are individual inboxes where mail messages are stored, each mailbox has separate username and password for access.

Usually you will only have one email address (e.g. joe.blog@idaqdemo.com ) per mailbox. Sometimes you may have several addresses that correspond to one mailbox, that is, all messages end up in the same inbox via different addresses (for example, you could achieve this using iDAQ's mail aliases feature).