There are three mailing lists available.
Mailing list policies
Both mailing lists are unmoderated. However, the mailing lists are configured them to discard all spam, to hold all non-subscriber posts for moderation, to accept all subscriber posts, and to admin approve subscription requests. Please contact Matthew Fluet if it appears that your messages are being discarded as spam.
Large messages (over 256K) should not be sent. Rather, please send an email containing the discussion text and a link to any large files.
Discussions started on the mailing lists should stay on the mailing lists. Private replies may be bounced to the mailing list for the benefit of those following the discussion.
Discussions started on MLtonemail@example.com may be migrated to MLtonfirstname.lastname@example.org, particularly when the discussion shifts from how to use MLton to how to modify MLton (e.g., to fix a bug identified by the initial discussion).
Some MLton developers and users are in channel #sml on http://freenode.net.