Mailing content to a list/group of email addresses
You can use the new Newsletter module for D7.

Features


  Multiple newsletters lists configurable on terms, not vocabularies
      Plain text or HTML out of the box
      Multiple schedules Each newsletter can have more than one schedule, e.g. Daily, Monthly, Weekly, manually or even custom, eg
  after 10 new posts for this term.
      Centralized administration and configuration on single page.
      Users can customize the terms in the list they subscribe to
      Custom template per list
      Statistics (CTR and Open-Rate)
      Drupal 7 only