messaging is going to reside in places they don't own
but that is the case with every messenger that stores messages on your behalf. telegram, whatsapp, signal... with those ALL people are not running their own servers.
whatsapp and signal store encrypted copies of the messages, and so does deltachat.
beyond that each client also stores a copy of each message locally. as does deltachat.
in difference to all others at least with deltachat i have a choice to use a different server that i trust. with whatsapp and signal i don't have that choice.
but that is the case with every messenger that stores messages on your behalf. telegram, whatsapp, signal... with those ALL people are not running their own servers.
whatsapp and signal store encrypted copies of the messages, and so does deltachat.
beyond that each client also stores a copy of each message locally. as does deltachat.
in difference to all others at least with deltachat i have a choice to use a different server that i trust. with whatsapp and signal i don't have that choice.