mod_carbons

This module implements XEP-0280: Message Carbons, allowing users to maintain a shared and synchronized view of all conversations across all their online clients and devices.

This module can only synchronize conversations with clients that are connected at the time of the conversation, and that support XEP-0280. For synchronization with clients that may be offline at the time of the conversation, you can additionally use mod_mam to store conversations on the server.

modules_enabled = {
  ...
     "carbons";
}