I need to deploy a system for centralizing mailing of trusted contacts (over 100+), hosted on my server, not external services like Mailchimp.
The key requirements:
1) it should be protected, so only contacts added to the list should receive messages
2) it should have high delivery rate, so all of them should receive our emails;
3) they should have an opportunity to reply back (similar to http://seclists.org/fulldisclosure/)
4) ideally, it should have WEB-interface for management, if possible