Custom mailing solution for sending out newsletters (integrated with Drupal 7)

Looking for a developer to customize a mailing application that allows us to send newsletters to stand-alone mailing lists as well as the user base of our Drupal 7 web site. The mailing app should entail the following functionalities: 1) Selecting sub-groups of a 'full' mailing list by specifying filter criteria (filter criteria obviously are reflected in the respective fields of the mailing lists (e.g. age, location, sex, etc.)) 2) Composing of newsletters in plain text & HTML as well as use of variables in message body, subject field, etc 3) Processing of failure notices 4) Processing out of office messages Mailing lists should be either taken directly from our Drupal 7 database or be imported from csv. We do not want to utilize a third party hosted solution like mailchimp. Mailings should be sent out via our own mail servers. Otherwise we are open to suggestions.