> > > Do any of the mentioned alternatives fulfill those requirements? >
I think most - with very little investment on taking backup (same as we do with ponymail today). Two examples: * http://apache-airflow.slack-archives.org/ Apache Airflow public slack. searchable and owned by us: Developed by one of our PMC members in his free time. Solves "public", "owned", "searchable". With little effort can be made offline-usable (it's a simple web app that loads the backup of slack messages), It even looks nice. The only thing it lacks currently is support for thread display. * For Github discussion as I mentioned before it's just making sure you subscribe to emails (same as current Ponymail backup). I think it's not a matter of "limitation" of certain media, bit more a question of a little "investment" into some popular solutions to make them fulfill the requirements we have and a way that INFRA provides instructions and possible some little infrastructure and possibly "verification" for those popular media used by different PMC. Same as currently providing support for Ponymail (which is essentially a 3rd-party tool as well), It is more effort to support more solutions - yes, but INFRA can also tap into support of the PMCs that want to use different tools to help with making the effort to make it "blessed". J.
