Continuing to run Mailman and Discourse using the exact email addresses (as Mailman) in parallel

Yes, that’s possible – Migrate a mailing list to Discourse (mbox, Listserv, Google Groups, etc) has instructions for it. Also, if you choose our hosting, we can do it for you.

Yes, you can create a read-only mirror of the mailing list. All emails that get sent to the mailing list will appear inside a category in Discourse. Please note, we recommend that you disallow any replies in such a category to prevent any confusion, because Discourse will never send emails to the mailing list.

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