You can setup your own Mastodon instance and nobody will delete the accounts there unless you want it. And it'll work with other mastodon instances. Mastodon

You can setup your own Mastodon instance and nobody will delete the accounts there unless you want it. And it'll work with other mastodon instances. Mastodon isn't hotmail or gmail it's an MTA+MDA, anyone can setup those on their own servers and become reachable by email...