It could be spam. There are a lot of rules. The e-mail has to be valid, it has to be addressed properly, it has to have a proper sender. You cannot send an e-mail just to “Parliament”; it has to be addressed to a member of Parliament. Also, you cannot replace who the sender is. It cannot be a group sending.
We have a long list of rules that over the years, following industry best practices, we have applied to make sure we do not corrupt or fill your mailbox with unwanted e-mails that have no meaning.