Dada Mail can help you manage a mailing list, offers complete support for safe, closed-loop opt-in subscriptions, sends out mass mailings, keeps an archive of your messages, and allows you to share your messages in many ways. It runs on your Web hosting account and you interact with it through your Web browser, making it available anywhere you have a connection to the Internet. You do not have to rely on a third-party list management system with costly monthly fees. It is rich with features, but tries to keep it simple. It is designed to favor flexibility, extensibility, and ease-of-use over core speed or extremely flashy but hard-to-use features. It is designed to be installed, set up, and understood by regular people who have Web sites, but has enough advanced features to entice more proficient users. If you've ever installed a bulletin board or blog software, you should be able to install Dada Mail without too many problems. Dada Mail can scale. You can install Dada Mail on most any basic hosting account and start sending out messages. If your mailing list grows large, you can switch to sending with a more powerful third-party system, like Amazon SES, where there's potentially no limit on the number of emails you may send, all without having to change mailing list management systems or your hosting.
Sympa is a scalable and highly customizable mailing list software. It can cope with big lists (780,000 subscribers), and it comes with a complete Web interface for both the user and the administrator. It is internationalized. Sites can customize Web and mail templates, authentication backends, and authorization scenarios. Dynamic mailing lists can use multiple backends (LDAP, SQL, files, lists, or others). Sympa is the only S/MIME and DKIM enabled mailing list software, and it provides both authentication and encryption.
The Simple Mail Distributor is an Email::Filter-based Perl script which can be used to implement an administratively-managed mailing list. The service can be restricted to a list of allowed senders. Each message is sent individually with the To header adjusted to match the recipient.
Minimalist is a mailing list manager. It is small, fast, and easy to setup and maintain. It supports per-user settings, a write-only subscription option, multiple languages, a workaround for MIME-encoded messages, several levels of security, archiving, blacklisting, and more. It can be configured on a per-list basis as well as globally.
Shibboleth is a privacy and security-aware mailing list manager, perfect for allowing closed groups to interact on the Internet without interference from outsiders and former insiders. It features user verification to prevent any forged mailing to list, message digest handling, address standartization, header canonicalization, file serving, header-based passwords, PGP support, remote e-mail based management, lists moderation, message filters, and more.
ezmlm-web is a Web interface for the administration of ezmlm-idx mailing lists. It has user level access control, and allows you to create, modify, and update any mailing list's configuration as well as control the subscriber base. ezmlm-web provides full support for all the features of ezmlm-idx. The interface is template based and can easily be customized or replaced. It is translated into seven different languages. Support for encrypted mailing lists (gpg-ezmlm) is included.
newsPro is a Web interface for newsletters/announcements. Users can include their email address in the database, and they will receive email newsletters sent by this script. It is available in English, German, and Russian. In contrast to other similar scripts, no SQL is needed for newsPro.