Is BCC'd (Blind Carbon Copied) to more than ten people
Was sent to multiple persons and is not part of a mailing list to which you personally subscribed and may unsubscribe at any time
The parties sending the electronic mail will [probably] not cease and desist when asked to do so
There is an attempt to disguise the message's point of origin my the manipulation or falsification of SMTP headers
The message was not sent by anyone you know
If the message matches two of the above or more, I will consider it spam and report it. Messages will also be considered spam on the basis of content. -- If you stare too long into the abyss the abyss stares back at you. -Nietzsche