Thanks for putting this together Jeff. A lot of Mailgun customers organize local open-source projects and use mailing lists to stay connected with members. That's one of the reasons we originally created mailing lists. Nice that managing them will be a little eaiser now.
Sure thing! I use it for my own lists.
GitHub link is a 404. It would be nice for an open source project to use a public repository, just my 2¢.