Schleuder
Schleuder manages mailing lists with GPG support and can resend messages through a list. It is for people and groups that need mailing list management and GPG in one program, or that need to send messages again through the list. Its narrow scope combines these functions instead of serving as a broad communications platform. A key limitation is that Schleuder's GPG behavior is not explained in the available information. The options for resending messages are also unspecified, and no other mailing list features are described. This lack of detail makes it hard to judge whether Schleuder will fit a specific setup. No paid product is known to be a direct replacement. Check the project's documentation for its exact behavior and features before deciding whether it meets your needs.