From what I gathered, Lefos is some LLM tool with email interface, with maybe potentially giving Claw-like capabilities to read your inbox.

Earendil seems like some startup focused on open-source founded by a bunch of famous open-source devs. Though I am not sure if they're VC funded, but various mentions of "buying out" make me think that they are.

Earendil is the company, Lefos the first product, an agent that has email as primary interface.