I love Deltachat. its basically just an encrypted folder on your email server. but if we dont want to use that, why don't we all just use Keychat?

Do you have to use your own email server, or is it a privacy improvement to do it? I think ecash is needed to send messages in keychat, what could be good to onboard new people to ecash through keychat, but could also a to big of a hurdle to start using it