Mailing

Card: https://trello.com/c/zp8ibqBS/11-email-notifications-no-configuration-initially-send-an-email-notification-to-everyone-whenever-a-board-is-created-a-card-is-crea
This has to be added yet: @exalted could you please take a look at their pricing? Heroku asks me for a credit card when I add their plugin. Any ideas?