WP Mailster free WordPress plugin

WP Mailster allows your users to be part of a group and communicate by email without having to log into a website. Similar to programs like Mailman or Listserv this plugin allows you to run a discussion mailing list. That means that every email sent to a central email address is forwarded to the rest of the members of the list. When members reply to such emails WP Mailster again forwards them to the other list recipients. Unlike newsletter plugins this allows true two-way communication via email. Features include: group communication through email usable with any POP3/IMAP email account recipients can be managed in the WordPress admin area users can subscribe/unsubscribe through widgets on the website all WP users can be chosen as recipients, additional recipients can be stored (without having to create them as WP users) users can be organized in groups single users or whole groups can be added as recipients of a mailing list replies to mailing list messages can be forwarded to all recipients (or only the sender) email archive for browsing the mails full support of HTML emails and attachments custom headers and footers subject prefixes many more features