Hi, Since the current Boost webserver and mailing list are quite out-of-date, it makes sense to consider the upgrade path. Mailman3 is a complete rewrite of the mailing list software. It's designed with multiple components: hyperkitty archives, postorius, and mailman-core. Dev instances have been installed. If you have any curiosity about testing mailman3 using your local email client, or sending feedback about the mailman3 experience, you can subscribe at https://lists.preview.boost.org. Send/receive emails. If you notice problems using mailman3, open an Issue at the Github repository cppalliance/boost-mailman. Now is the best time to discover issues, rather than after deployment. Lists at https://lists.preview.boost.org won't be maintained permanently. Any emails or accounts there will eventually be deleted. It's only a staging type environment. Working with the web developers we are planning to modify the appearance of the front-end UI, adding css styles, links to the boost website, and so on. Keep an eye on the test lists for updates. In the future when "going live", the idea will be to schedule (extended) planned downtime, and have a new server fully replace "lists.boost.org". Which specific boost mailing lists should be kept? It would be easier to avoid migrating all lists, if some of them are not active. Best Regards, Sam Darwin C++ Alliance