77 hits. Most of them seem to be either random pairings of the words (e.g. the CV that mentioned two papers, one titled The Political Ecology of Takeovers... and one Drafting an Effective Greenmail Prohibition) or references to an email service or, in one case, the Queens Green Party's newsletter, Greenmail.

The one explicit definition that matches mav's concept was When poor people object to pollution, their "benefactors" argue that they have to make a choice between clean air and water, and jobs. The term for this is "greenmail."