Element

Element is a new type of messaging app. You choose where your messages are stored, putting you in control of your data. You can connect it to the Synapse app running on your Umbrel, or to any other Matrix homeserver. - It gives you access to the Matrix open network, so you can talk to anyone. Element provides a new level of security, adding cross-signed device verification to default end-to-end encryption. - The very best end-to-end encryption and Element's unique cross-signed device verification means only those that should be in the conversation can read the messages - no eavesdroppers or im.