No, a digital mailbox is more secure than a standard e-mail account. When using a secure digital mailbox, both sender and recipient must identify themselves.
E-mails from public authorities sent to your digital mailbox are encrypted as hidden text.
In order to open and read e-mails in your digital mailbox, you have to identify yourself via the ID-port log-in system.
Only you, and those to whom you have granted permission, may access mail from public authorities in your secure digital mailbox.