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.
要求必须进行端到端加密时，若一对一消息当中的对话无法被加密，就不会发出。收到的消息若未加密，也不会被记录或出现于对话中。