Mcaster1ListCaster — Self-Hosted Mailing-List & Discussion Server
A LISTSERV-style mailing-list and newsgroup-style discussion server that runs on one box. Email and web subscribe with double opt-in, classic email commands, member-to-member discussion lists, moderation, and one-click unsubscribe — multi-domain from a single install.
Live · Alpha
Self-Hosted
Linux
What works today
Running now on the Mcaster1 and CasterClub list domains. The features below are implemented and in use.
- Web & email subscribe with double opt-in confirmation
- Classic email commands: SUBSCRIBE, SIGNOFF, SET, REVIEW, QUERY, LISTS, HELP
- Newsgroup-style discussion lists — members email the list, replies fan out to everyone
- Moderation queue with approve / reject for moderated lists
- Per-subscriber options (no-mail, conceal, no-post, acknowledge)
- One-click unsubscribe (RFC 8058) with per-list suppression
- Content filters and attachment size/type policy on inbound posts
- Rate-limited, staggered delivery to respect provider sending limits
- Multi-domain (per-domain) lists with a public list directory
- Admin dashboard, subscriber reports, and health metrics
On the roadmap: digest compilation, automated bounce/complaint processing, and DKIM signing are designed but not yet shipped.