[v64]

>I'm aware that Mastodon can talk to them with some success, but AFAIK it is only optimized to present certain types of content, so if you want Reddit-like user experience rather than Twitter-like one you want Lenny.

This is partially true. I run Pleroma, which is a microblogging server like Mastodon, so Mastodon content that federates to my instance shows up identically to my own posts. On a system like Lemmy, when their posts federate to me, what I see natively on my instance is a person posting a link that links to the originating website. I can see some replies inline, but they're linear and not threaded like on Lemmy. However, unlike what you said, still using my @[e-mail] identity, I can click the link from my instance to the Lemmy instance and interact with the content there natively. No need to create a different subdomain. There's no need to host a Lemmy instance yourself if you want to interact with Lemmy instances. Lemmy on the backend is still talking the ActivityPub protocol and it's only the frontend that alters how the posts are presented, so as long as your server speaks ActivityPub, you can use the same identity.