We engage with decentralization protocols a lot (many nerds love to) but make no mistake: in the end, the app needs to work and be easy to use. #deltachat is a cross-platform FOSS offering, with guaranteed security levels, close to user expectations ... major factors in driving adoption!
True, the email system is not necessarily better than #xmpp ... but please compare with chatmail.at which is fast, ephemeral and secure, with delta inherently being a peer-to-peer E2EE messenger :)
Chatmail
Chatmail provides FOSS infrastructure for interoperable, secure, speedy and reliable end-to-end encrypted messaging. Check out clients as Arcane Chat, Bots or Delta Chat today!chatmail.at
This entry was edited (6 days ago)

Hans-Cees π³π³π€’π¦ππππππ
in reply to Delta Chat • • •#deltachat
Delta Chat
in reply to Hans-Cees π³π³π€’π¦ππππππ • • •@hanscees yes, email servers are used as relays (chatmail) only. They are store-and-forward servers just like signals hyperscale servers (Amazon, google, ...)
Delta single device users will delete the server side copy after receiving the message. For multi device setups messages are queued for 20-40 days, and then unconditionally deleted on relays.
Hans-Cees π³π³π€’π¦ππππππ
in reply to Delta Chat • • •I already have a mailserver at home so on ipv4 SMTP ports are taken. I can set up an ipv6 server. Is there a way, perhaps with dns, to let other servers / clients know to use other ports if they only speak ipv4?
Scott Murray
in reply to Delta Chat • • •for a new profileβ¦ do you recommend the ninerun server?
I realize itβs not quite like choosing a mastodon instance but stillβ¦ it would be nice to have a bit of context for who runs them, how they are funded, how long they will be around forβ¦ but maybe chat mail is not there yet or maybe Iβm overthinking the use case π
Delta Chat
in reply to Scott Murray • • •Delta chat is designed to be secure against a fully compromised server. A hostile operator should not be able to interject messages or impersonate. We want to commission a security audit on this in 2026. So to answer: maybe don't worry and choose any on the public list and nine only if in doubt
Chatmail: Relays
chatmail.atScott Murray
in reply to Delta Chat • • •Thatβs helpful, thanks.
I wasnβt so worried about the security side but was thinking of longevity. Like if the server disappears tomorrow or goes offlineβ¦ then I have to make a new totally separate account on another server, and re-establish any connections with people Iβm chatting with, right?
Delta Chat
in reply to Scott Murray • • •Scott Murray
in reply to Delta Chat • • •Delta Chat
in reply to Scott Murray • • •Delta chat is designed to be secure against a fully compromised server. A hostile operator should not be able to interject messages or impersonate. We want to commission a security audit on this in 2026
Chatmail: Relays
chatmail.atLaurenz0071
in reply to Delta Chat • • •sm4llth1ng
in reply to Delta Chat • • •Another interesting choice of using email protocol is that on restricted networks where only mail and web is allowed (only ports open at the firewall levels to go out of the local network), chatmail will work while e2ee messenger using ports closed at the firewall level won't.
Having multiple options at disposal is the most resilient strategy. :)