In extreme cases, Keychat can achieve the following:

changing the encryption key for each message,

changing the sending address for each message,

changing the receiving address for each message,

changing the sending relay for each message,

changing the receiving relay for each message. nostr:note1f6vw6cvnp0mt4s3nwakahffwf3qvh4z49kvt93l9gmqy9jpwd2ksfggmq6