@draconigen optionally, yes! you can turn on logging by clicking the little gear icon next to a chat and setting it to on, a red dot will appear next to the chat to indicate logging is active. Chats with logging active will forward any message any user that joins has missed since they were last online in that group. Every conversation is a group basically, a DM is just a group with 2 people basically.
It's set up in such a way that the client will be able to do end to end encryption within this.