When requiring end-to-end encryption, messages in one-to-one conversations will not be sent unless they can be encrypted. Received unencrypted messages will not be shown as part of the regular conversation, and not logged either.
Quando require le cryptographia end-to-end, messages in conversationes un-a-un non sera inviate a minus que illos pote esser cryptate. Le messages recipite non cryptate non sera monstrate, ni registrate, como parte del regular conversation.