Keeping your chats secure is a good idea, but end-to-end encryption is just the beginning of the list of options to consider when picking a messaging app.
element keeps a lot of metadata unencrypted. but it is federated, you can choose the server that has access to it (deny federation for the room or set up federation ACLs if important to keep it there), and because of the former it’s harder to just shut down.
signal doesn’t, in theory they don’t even know the recipient of your messages (but there’s a twist in that part as I remember), but it is centralized around US servers. it is easier to shut down.
element keeps a lot of metadata unencrypted. but it is federated, you can choose the server that has access to it (deny federation for the room or set up federation ACLs if important to keep it there), and because of the former it’s harder to just shut down.
https://redlib.catsarch.com/r/privacy/comments/1bqymdr/what_is_not_encrypted_in_element_matrix_client/
https://red.artemislena.eu/r/privacy/comments/da219t/im_project_lead_for_matrixorg_the_open_protocol/
https://github.com/matrix-org/matrix-spec/issues/660
https://red.artemislena.eu/r/privacy/comments/1bqymdr/what_is_not_encrypted_in_element_matrix_client/
signal doesn’t, in theory they don’t even know the recipient of your messages (but there’s a twist in that part as I remember), but it is centralized around US servers. it is easier to shut down.