Generally
E2E encryption protects you because it encrypts your data from device to device.
Because E2E encryption is device-dependent, you must activate it for each device on which you want to use it. To do this, the system usually automatically creates a password for you. This password serves as the key for your data.
When you log into Rocket.Chat on a new device with your account, you will usually be automatically asked to enter your E2E password.
Enable E2E
Usually, when you log in to the chat for the first time, you will receive a message at the top to save your password.
If you click on it, it will be displayed.
Save this password. You will need it on every device on which you want to send/receive E2E messages.
Enable E2E for conversation
You can activate E2E for direct messages with other people. To do this, you will find a menu in the top left of every chat behind the symbol with the three dots "...".
If the recipient has also activated E2E, you will see the item “Activate E2E” and can start an E2E encrypted conversation.