Currently Mastodon users can follow and post to Lemmy communities.

On their end both posts and new comments look like regular Mastodon boosts and from our end their posts and comments look like regular Lemmy posts and comments with extra @ tags in them. So you’ll see those on WefWef and interact with them normally.

Kbin magazines have a way to also view Mastodon posts relating to the magazine topic, but Lemmy communities do not.