KocaX Messenger
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Support
KocaX Messenger — end-to-end encrypted chat
Need help with KocaX Messenger? This page explains how the app works and how to reach us. We answer every support request personally.
Contact us
When you email us, please include your username and a short description of the problem (do not send your password or master key — we never ask for them).
Frequently asked questions
How do I create an account?
Open the app, choose Register, pick a username and password, enter your invite code, and accept the Terms of Use. KocaX Messenger is invite-based to keep the network safe — ask an existing member for a code, or request one by emailing us.
How do I add a contact and start a chat?
Tap the gold + button, choose New chat, and enter your contact’s exact username. Usernames are exact (never guessed or listed publicly) to protect everyone’s privacy, so ask your contact for theirs. Tap Start chat and send your first encrypted message.
How do I start a group chat?
Tap the gold + button and switch to New group. Add members by their exact username and create the group. Group messages are end-to-end encrypted too.
Are my messages really private?
Yes. Every message and attachment is end-to-end encrypted on your device (X25519 + AES-256-GCM) before it reaches our servers. We cannot read your messages and we do not have your encryption keys. We do not sell data, show ads, or track you.
How do disappearing messages work?
Open a chat, tap the timer (⏱) next to the message box, and choose how long messages should last — from view-once, 5 seconds, up to 24 hours. New messages in that chat delete themselves automatically after the chosen time.
How do I block or report someone?
Open the chat, tap the ⚙ menu, and choose Block or Report. Blocking removes the contact and stops all messages from them. Reports go to our safety team, which acts on violations within 24 hours. KocaX Messenger has a zero-tolerance policy for abuse.
I lost access — how do I recover my account?
Your account is protected by your password and a personal master key. Keep your master key safe: because your data is end-to-end encrypted, we cannot reset it for you. Use Log in with your username, password and master key on any device to restore access.
How do I delete my account and data?
Use the in-app profile options to delete your account directly, or visit https://kocax.nl/delete-account.html if you cannot access the app. See our Privacy Policy for retention details.
Safety & moderation
KocaX Messenger is a private communication tool, not a place for illegal activity. We provide in-app Block and Report tools, require agreement to our Terms of Use on sign-up, and act on abuse reports within 24 hours. To report a serious safety concern, email us with the details.