If you interact with any other server on the network (meaning users on another server), all messages/attachments/metadata will be synced with all other servers by design.
Given the percentage of users on Matrix.org & servers they provide, some of your data will end up on Matrix HQ servers.
If you interact with any other server on the network (meaning users on another server), all messages/attachments/metadata will be synced with all other servers by design.
Given the percentage of users on Matrix.org & servers they provide, some of your data will end up on Matrix HQ servers.
Their instance is not federated.
Somehow missed that part. But what would be the point of a defederated chat then?
I use mine like old school Trillion. Element is my Discord, Signal, IRC client. One thing open on my desktop to do them all.
Edit: For instance, Beeper (https://www.beeper.com/) is just a defederated Synapse server with bridges.