ian
May 4, 2026, 8:50am
7
There are many falsehoods in the topic that needs to be cleared up.
DC is available for many platforms, including mobile and desktop.
DC can interoperate with other mobile, desktop and web apps capable of encryption, such as Thunderbird and Protonmail. Please refer to other existing topics for more in-depth information:
Could you please specify your exact problem that you need help with? Did you manage to add a classic email account on your Delta Chat installation? You should still be able to send unencrypted mail via a classic account.
FAQ - Delta Chat
A chat profile using a classic email address allows to to send and receive unencrypted messages. These messages, and the chats they appear in, are marked with an email icon.
Also, could you please share the URL where you read that support for non-chatmail …
The effort of documenting all above mentioned implementation details and publishing a full independent implementation based on that in a clean room methodology would strengthen the promise of openness and sustainability.
I see you have copy & pasted some of the valuable information here across at least 3 comments. Could you please deduplicate it and consolidate all of it in the top post and perhaps even convert it to a wiki via the admin menu?
The potential for tracking the IP address of clients requesting keys may already be lessened by using Tor. A new alternative would be for each chatmail server to offer to tunnel TLS (HTTPS) requests of its users to the recipient. It could be constrained to only allow such tiny requests & responses and only towards mail hosts and with rate limits to combat abuse. This is similar to how Signal implemented giphy via their blind proxy:
let’s say, some person A isn’t yet convinced to install chatmail clients on their devices, but they use email and, if necessary, they could try a certain MUA (one supporting Autocrypt etc), and do some technical setup (import PGP keys) in advance, to connect with person B (a delta chat enjoyer).
is it possible to for person B to use DeltaChat (or another chatmail client?) to communicate with person A, without person A installing any chatmail clients, relying only on well-known, established pr…
This thread aspires to be a tutorial on how to send Chatmails using Neomutt (on Debian-based distros, but should be helpful even if you aren’t running any form of Linux). It does not currently work.
By default, Chatmail servers let anyone set up a free account, but they reject any mail that does not meet their specific formatting requirements. It is fairly easy to set up a conventional mail client that will receive Chatmails, but making one send Chatmail in the correct format is harder.
First,…
Situation: you or a friend is using ProtonMail, Mutt, K9-Mail, Thunderbird or other email client with encryption support, the other is using Delta Chat and you want to chat.
From now on it will be assumed you are the one using Delta Chat while the other peer is using the classic email app.
In Delta Chat you can export your public key as vcard, you then need to import that key from that vcard in the other email clients that support encryption, if the other person share their key via another ch…