For my project in Launchpad, how do I send all merge requests to a mailing list?

1. The mailing list must be associated with a LP user or team. For teams, it is under "Set Contact Information".
2. Set this LP user or team as the "Reviewer" of the bzr tree, under "Set branch reviewer"
3. On the mailing list, allow implicit inbound emails from LP. For example, with Mailman, under "Privacy Options, Recipient Filters", set "Alias names (regexps) which qualify as explicit to or cc destination names for this list." to: mp\+.*@code\.launchpad\.net

Now all merge request emails will be delivered to the mailing list.

Register the mailing list as the owner of the branch?