graymail

/G R EY1 M EY0 L/
noun
  1. 1

    (Internet) Email that is not technically spam (since the user agreed to receive it) but which is unwanted, such as newsletters after making a purchase.

  2. 2

    (US, law) The threatened exposure of state secrets in order to manipulate legal proceedings.

verb
  1. 1

    (US, law) To threaten exposure of state secrets in order to manipulate legal proceedings.