@farshidhakimy @delta Currently the server admin can see a sender and recipient address. Soon, the sender will probably be noreply@ and the real sender will be hidden in the encrypted payload. Later even the sender address can be disposable so there won't be an obvious way to correlate the sender and recipient. You might be able to find the IP address of the sender using the Chatmail server you control or have compromised, but if the recipient is on another server you have no clue what their client IP is unless you can also compromise/seize that server too.