Optional how so? It’s a rotating key. Unless you have all of those keys to export into your computer, then you’ll be stuck with the current synced key.
I don’t see why the current key can’t encrypt old messages and send those. I admit I might be missing something obvious though. Maybe something like not wanting to accidentally leak old messages? As in it’s less attack surface or something?
Optional how so? It’s a rotating key. Unless you have all of those keys to export into your computer, then you’ll be stuck with the current synced key.
I don’t see why the current key can’t encrypt old messages and send those. I admit I might be missing something obvious though. Maybe something like not wanting to accidentally leak old messages? As in it’s less attack surface or something?