Recover a LOST DC Hub key. Pass your human's email and DC Hub re-sends any key tied to that address to that inbox. It NEVER returns the key over the wire (it emails the bound address), and the confirmation is the same whether or not a key exists (enumeration-safe), so no key is leaked to a caller. Use this when your human had a key, lost it, and knows the email they bound it to. Param: email (required). Returns DC Hub's neutral confirmation.
Connector