Delta Chat es una aplicación de mensajería segura, descentralizada y confiable. Está disponible para las plataformas móviles y del escritorio.
Delta Chat parece como Whatsapp o Telegram, pero también puedes utilizarlo y considerarlo como una aplicación de correo electrónico. Puedes registrarte de forma anónima en varios servidores de chatmail interoperables que son servidores de correo electrónico mínimos y optimizados para operaciones rápidas y seguras. O puedes utilizar servidores de correo electrónico clásicos y una cuenta de correo electrónico existente en cuyo caso, Delta Chat actúa como una aplicación de correo electrónico.
Para establecer contacto con otros de forma segura escanea un código QR de invitación o comparte un enlace de invitación. Esto es necesario cuando se utiliza un perfil de chat (predeterminado) basado en chatmail porque los servidores de chatmail rechazan los mensajes salientes no cifrados.
Si crees un perfil de chat con una dirección de correo electrónico clásica puedes crear manualmente un contacto si conoces su dirección de correo electrónico y escribirle un mensaje aunque el destinatario no utilice Delta Chat.
Soporte omnipresente, múltiples perfiles y múltiples dispositivos en todas las plataformas.
Interactivas aplicaciones de web en un chat para jugar y colaborar
Cifrado de extremo a extremo auditado seguro contra ataques a la red y al servidor.
Si un mensaje proviene de un contacto desconocido, aparece como una solicitud.
Necesitas aceptar la solicitud antes de poder responder.
También puedes eliminarlo si no quieres chatear con ellos por ahora.
Si eliminas una solicitud, los mensajes futuros de ese contacto seguirán apareciendo como solicitud de mensaje, por lo que puedes cambiar de opinión. Si realmente no quieres recibir mensajes de esta persona, considera bloquearlos.
Si. Además del texto sin formato, todos los archivos adjuntos de correo electrónico se muestran como mensajes separados. Los mensajes salientes obtienen archivos adjuntos según sea necesario automáticamente.
Para mejorar el rendimiento, las imágenes se optimizan y se envían en un tamaño más pequeño de forma predeterminada, pero puedes enviarla como un “archivo” para conservar la original.
A profile is a name, a picture and some additional information for encrypting messages. A profile lives on your device(s) only and uses a chatmail or a classic e-mail server to transport messages.
En la primera instalación de Delta Chat se crea un primer perfil.
Después, puedes tocar la imagen de tu perfil en la esquina superior izquierda para Añadir perfiles o para Cambiar perfiles.
You may want to use separate profiles for political, family or work related activities, or e. g. for a dedicated “spam-profile” with which you register at websites and platforms that tend to cause unsolicited messages (“spam”) sooner or later.
Quizás quieres aprender cómo se usa el mismo perfil en múltiples dispositivos.
Puede agregar una foto de perfil en su configuración. Si escribe a sus contactos o los agrega a través de un código QR, ellos lo verán automáticamente como su foto de perfil.
Los contactos que no usen Delta Chat no verán la foto de perfil (a menos que instalen Delta Chat :)
Por cuestiones de privacidad, nadie verá su foto de perfil hasta que les escriba un mensaje.
Su foto de perfil no se envía con cada mensaje, pero con la frecuencia suficiente para que sus contactos vuelvan a recibir su foto de perfil, incluso si agregan un nuevo dispositivo.
Yes, you can do so under Settings → Profile → Bio. Your contacts who use Delta Chat will see it when they view your contact details. Moreover, it will appear as a classic e-mail signature.
Usa estas herramientas para organizar tus chats y mantener todo en su lugar:
Chats fijados siempre se mantienen al frente de tu listado. Puedes usarlos para acceder a tus chats preferidos de forma rápida o temporal para no olvidarte de tus cosas.
Chats muteados si no quieres recibir notificaciones de ellos. Chats muteados se mantienen en su lugar e inclusive puedes fijarlos.
Archivar chats si no deseas verlos en tu lista de chats. Los chats archivados siguen siendo accesibles arriba de la lista de chats o a través de la búsqueda.
Cuando un chat archivado recibe un nuevo mensaje, a menos que esté silenciado, saldrá del archivo y volverá a aparecer en tu lista de chats. Los chats silenciados permanecen archivados hasta que los desarchivas manualmente.
Para archivar o fijar un chat, toque prolongadamente (Android), use el menú del chat (Android/Escritorio) o deslícese hacia la izquierda (iOS); para silenciar un chat, use el menú del chat (Android/Escritorio) o el perfil del chat (iOS).
Mensajes guardados es un chat que puedes utilizar para recordar y encontrar mensajes fácilmente.
En cualquier chat, mantén pulsado o haz clic con el botón derecho en un mensaje y selecciona Guardar
Los mensajes guardados se marcan con el símbolo
junto a la marca de tiempo
Después puedes abrir el chat “Mensajes guardados” - y allí verás los mensajes guardados.
Con pulsar a 
,
puedes volver al mensaje original en el chat original
Finally, you can also use “Save Messages” to take personal notes - open the chat, type something, add a photo or a voice message etc.
As “Saved Message” are synced, they can become very handy for transferring data between devices
Messages stay saved even if they are edited or deleted - may it be by sender, by device cleanup or by disappearing messages of other chats.
A veces puede ver un punto verde 
junto al avatar de un contacto.
Significa que ha sido visto recientemente en los últimos 10 minutos:
So this is not a real time online status - and if someone doesn’t answer right away even though they seem to be online, don’t worry and give them some space :)
On the other hand, others will not always “see that you are online”. If you have turned off read receipts, they will not see the green dot until one of the above conditions are met.
You can edit the text of your messages after sending.
For that, long tap or right click the message and select Edit
or 
.
Si has enviado un mensaje accidentalmente desde el mismo menú, seleccione Borrar y después Borrar para todos.
Mientras que los mensajes editados tendrán la palabra “Editado” junto a la marca de tiempo, los mensajes borrados serán eliminados sin un marcador en el chat. No se envían notificaciones y no hay límite de tiempo.
Note, that the original message may still be received by chat members who could have already replied, forwarded, saved, screenshotted or otherwise copied the message.
Puedes activar “desaparición de mensajes” en la configuración de un chat, en la parte superior derecha de la ventana de chat, seleccionando un lapso de tiempo entre 1 minuto y 5 semanas.
Hasta que la configuración se desactive nuevamente, La aplicación Delta Chat de cada miembro del chat se encarga de borrar los mensajes después del lapso de tiempo seleccionado. Comienza el lapso de tiempo cuando el receptor ve por primera vez el mensaje en Delta Chat. Los mensajes se eliminan. tanto en cada cuenta de correo electrónico en el servidor, y en la propia aplicación.
Tenga en cuenta que puede confiar en los mensajes que desaparecen sólo mientras confíes en tus compañeros de chat; compañeros de chat maliciosos pueden tomar fotos, o guardar, copiar o reenviar mensajes antes de eliminarlos.
Aparte de eso, si un compañero de chat desinstala Delta Chat, los mensajes no se eliminarán de su cuenta de correo electrónico. Lo más probable es que ya no sean descifrables. (siempre que estuvieran cifrados en primer lugar).
Elimínate de la lista de miembros o elimina todo el chat. Si desea unirse al grupo nuevamente más tarde, pídale a otro miembro del grupo que lo agregue nuevamente.
Como alternativa, también puede “silenciar” a un grupo, lo que significa que recibirá todos los mensajes y aún puede escribir, pero ya no se le notifican nuevos mensajes.
De forma predeterminada, Delta Chat almacena todos los mensajes localmente en su dispositivo. Si por ej. desea ahorrar espacio de almacenamiento en su proveedor de correo, puedes configurar Delta Chat para eliminar automáticamente los mensajes antiguos ya recibidos en el servidor. Aún permanecen en su dispositivo hasta que los elimine allí también.
To turn it on, go to Delete Old Messages → Delete Messages from Server in the “Chats and Media” settings. You can set a timeframe between “At once” and “After 1 year”. All e-mails received by Delta Chat will be deleted from the server after this timeframe.
Tenga en cuenta que si utiliza Delta Chat en más de un dispositivo, debes dejar el mensaje en el servidor con un plazo de tiempo suficiente para que los otros dispositivos también puedan descargarlos.
Push Notifications are sent by Apple and Google “Push services” to a user’s device so that an inactive Delta Chat app can fetch messages in the background and show notifications on a user’s phone if needed.
Push Notifications work with all chatmail servers on
iOS devices, by integrating with Apple Push services.
Android devices, by integrating with the Google FCM Push service, including on devices that use microG instead of proprietary Google code on the phone.
As of May 2024, classic e-mail servers do not support Push Notifications for Delta Chat users.
Yes, Delta Chat automatically uses Push Notifications for chatmail profiles. And no, there is no alternative on Apple’s phones to achieve instant message delivery because Apple devices do not allow Delta Chat to fetch data in the background. Push notifications are automatically activated for iOS users because Delta Chat’s privacy-preserving Push Notification system does not expose data to Apple that it doesn’t already have.
If a “Push Service” is available, Delta Chat enables Push Notifications to achieve instant message delivery for all chatmail users. If you are using a classic e-mail provider instead of chatmail servers, Push Notifications are not available.
In the Delta Chat “Notifications” settings for “Instant delivery” you can change the following settings effecting all chat profiles:
Use Background Connection: If you are not using a Push service, you may disable “battery optimizations” for Delta Chat, allowing it to fetch messages in the background. However, there could be delays from minutes to hours. Some Android vendors even restrict apps completely (see dontkillmyapp.com) and Delta Chat might not show incoming messages until you manually open the app again.
Force Background Connection: This is the fallback option if the previous options are not available or do not achieve “instant delivery”. Enabling it causes a permanent notification on your phone which may sometimes be “minified” with recent Android phones.
Both “Background Connection” options are energy-efficient and safe to try if you experience messages arrive only with long delays.
Delta Chat Push Notification support avoids leakage of private information. It does not leak e-mail, IP address or message content (not even encrypted) to any system involved in the delivery of Push Notifications.
Here is how Delta Chat apps perform Push Notification delivery:
A Delta Chat app obtains a “device token” locally, encrypts it and stores it on the chatmail server.
When a chatmail server receives an e-mail for a Delta Chat user it forwards the encrypted device token to the central Delta Chat notification proxy.
The central Delta Chat notification proxy decrypts the device token and forwards it to the respective Push service (Apple, Google, etc.), without ever knowing the IP or e-mail address of Delta Chat users.
The central Push Service (Apple, Google, etc.) wakes up the Delta Chat app on your device to check for new messages in the background. It does not know about the chatmail or e-mail address of the device it wakes up. The central Apple/Google Push services never see an e-mail address (sender or receiver) and also never see any message content (also not in encrypted forms).
The central Delta Chat notification proxy is small and fully implemented in Rust and forgets about device-tokens as soon as Apple/Google/etc processed them, usually in a matter of milliseconds.
Note that the device token is encrypted between apps and notification proxy but it is not signed. The notification proxy thus never sees e-mail addresses, IP-addresses or any cryptographic identity information associated with a user’s device (token).
Resulting from this overall privacy design, even the seizure of a chatmail server, or the full seizure of the central Delta Chat notification proxy would not reveal private information that Push services do not already have.
Delta Chat is a free and open source decentralized messenger with free server choice, but we want users to reliably experience “instant delivery” of messages, like they experience from WhatsApp, Signal or Telegram apps, without asking questions up-front that are more suited to expert users or developers.
Note that Delta Chat has a small and privacy-preserving Push Notification system that achieves “instant delivery” of messages for all chatmail servers including a potential one you might setup yourself without our permission. Welcome to the power of the interoperable and massive chatmail and e-mail system :)
Delta Chat uses a secure subset of the OpenPGP standard to provide automatic end-to-end encryption using these protocols:
Secure-Join to exchange encryption setup information through QR-code scanning or “invite links”.
Autocrypt is used for automatically establishing end-to-end encryption between contacts and all members of a group chat.
Sharing a contact to a chat enables receivers to use end-to-end encryption with the contact.
Delta Chat does not query, publish or interact with any OpenPGP key servers.
All messages in Delta Chat are end-to-end encrypted by default. Since the Delta Chat Version 2 release series (July 2025) there are no lock or similar markers on end-to-end encrypted messages, anymore.
If you use default chatmail relays, it is impossible to receive or send messages without end-to-end encryption.
If you instead create a profile using a classic e-mail server,
you can send and receive messages without end-to-end encryption.
Such messages lacking end-to-end encryption are marked with an e-mail icon
.
You can send an invite link through another private chat, show an invitation QR code when next to each other or in a video call, or click on a “contact” that was shared in a chat.
For Group invitations, tap the chat group title to see its member list, and select “QR Invite code”.
For direct 1:1 chat invitations,
tap the QR Code icon 
on the Delta Chat app main screen.
Ask your chat partner to scan the QR image with their Delta Chat app, or click “Copy” or “Share” to create an invite link and share it with your chat partner.
Now wait while end-to-end encryption is getting established.
If both sides are online, they will soon see a (group or direct) chat and can start messaging securely.
If one side is offline or in bad network, the ability to chat is delayed until connectivity is restored.
Congratulations! You now will automatically use end-to-end encryption with this contact. If you add each other to chat groups, end-to-end encryption will be established among all members.
A contact profile might show a green checkmark
and an “Introduced by” line.
Every green-checkmarked contact either did a direct QR-scan with you
or was introduced by a another green-checkmarked contact.
Introductions happen automatically when adding members to groups.
Whoever adds a green-checkmarked contact to a group with only green-checkmarked members
becomes an introducer.
In a contact profile you can tap on the “Introduced by …” text repeatedly
until you get to the one with whom you directly did a QR-scan.
Para obtener una discusión más detallada sobre “cifrado de extremo a extremo garantizado”, por favor consulta los protocolos Secure-Join y lee específicamente sobre “Grupos Verificados”, el término técnico de lo que aquí se llama chats “marcados con una estampilla verde” o “cifrados de extremo a extremo garantizado”.
Yes.
Cuando hablamos de un mensaje “cifrado de extremo a extremo”, siempre nos referimos a que todo el mensaje está cifrado, incluyendo todos los archivos adjuntos y los metadatos de los archivos adjuntos, como los nombres de archivo.
Yes, Delta Chat uses a secure subset of OpenPGP requiring the whole message to be properly encrypted and signed. For example, “Detached signatures” are not treated as secure.
OpenPGP is not insecure by itself. Most publicly discussed OpenPGP security problems actually stem from bad usability or bad implementations of tools or apps (or both). It is particularly important to distinguish between OpenPGP, the IETF encryption standard, and GnuPG (GPG), a command line tool implementing OpenPGP. Many public critiques of OpenPGP actually discuss GnuPG which Delta Chat has never used. Delta Chat rather uses the OpenPGP Rust implementation rPGP, available as an independent “pgp” package, and security-audited in 2019 and 2024.
We aim, along with other OpenPGP implementors, to further improve security characteristics by implementing the new IETF OpenPGP Crypto-Refresh which was thankfully adopted in summer 2023.
Yes, we are following efforts like MLS or Saltpack but adopting them would mean breaking end-to-end encryption interoperability with all other e-mail apps that typically support OpenPGP encryption. So it would not be a light decision to take and there must be tangible improvements for users.
Delta Chat takes a holistic “usable security” approach and works with a wide range of activist groupings as well as renowned researchers such as TeamUSEC to improve actual user outcomes against security threats. The wire protocol and standard for establishing end-to-end encryption is only one part of “user outcomes”, see also our answers to device-seizure and message-metadata questions.
No, Delta Chat never was vulnerable to EFAIL because its OpenPGP implementation rPGP uses Modification Detection Code when encrypting messages and returns an error if the Modification Detection Code is incorrect.
Delta Chat also never was vulnerable to the “Direct Exfiltration” EFAIL attack
because it only decrypts multipart/encrypted messages
which contain exactly one encrypted and signed part,
as defined by the Autocrypt Level 1 specification.
If you are sending or receiving e-mail messages without end-to-end encryption (using a classic e-mail server), they are still protected from cell or cable companies who can not read or modify your e-mail messages. But both your and your recipient’s e-mail providers may read, analyze or modify your messages, including any attachments.
Delta Chat by default uses strict TLS encryption which secures connections between your device and your e-mail provider. All of Delta Chat’s TLS-handling has been independently security audited. Moreover, the connection between your and the recipient’s e-mail provider will typically be transport-encrypted as well. If the involved e-mail servers support MTA-STS then transport encryption will be enforced between e-mail providers in which case Delta Chat communications will never be exposed in cleartext to the Internet even if the message was not end-to-end encrypted.
Unlike most other messengers, Delta Chat apps do not store any metadata about contacts or groups on servers, also not in encrypted form. Instead, all group metadata is end-to-end encrypted and stored on end-user devices, only.
E-mail Servers can therefore only see
the message date,
sender and receiver addresses
and message size.
All other message, contact and group metadata resides in the end-to-end encrypted part of messages.
Both for protecting against metadata-collecting e-mail servers as well as against the threat of device seizure we recommend to use a chatmail relay to create chat profiles using random e-mail addresses for transport. Note that Delta Chat apps on all platforms support multiple profiles so you can easily use situation-specific profiles next to your “main” profile with the knowledge that all their data, along with all metadata, will be deleted. Moreover, if a device is seized then chat contacts using short-lived profiles can not be identified easily.
No, not yet.
The Signal messenger introduced “Sealed Sender” in 2018 to keep their server infrastructure ignorant of who is sending a message to a set of recipients. It is particularly important because the Signal server knows the mobile number of each account, which is usually associated with a passport identity.
Even if chatmail relays do not ask for any private data (including no phone numbers), it might still be worthwhile to protect relational metadata between addresses. We don’t foresee bigger problems in using random throw-away e-mail addresses for sealed sending but an implementation has not been agreed as a priority yet.
No, not yet.
Delta Chat today doesn’t support Perfect Forward Secrecy (PFS). This means that if your private decryption key is leaked, and someone has collected your prior in-transit messages, they will be able to decrypt and read them using the leaked decryption key. Note that Forward Secrecy only increases security if you delete messages. Otherwise, someone obtaining your decryption keys is typically also able to get all your non-deleted messages and doesn’t even need to decrypt any previously collected messages.
We designed a Forward Secrecy approach that withstood initial examination from some cryptographers and implementation experts but is pending a more formal write up to ascertain it reliably works in federated messaging and with multi-device usage, before it could be implemented in chatmail core, which would make it available in all chatmail clients.
No, not yet.
Delta Chat uses the Rust OpenPGP library rPGP which supports the latest IETF Post-Quantum-Cryptography OpenPGP draft. We aim to add PQC support in chatmail core after the draft is finalized at the IETF in collaboration with other OpenPGP implementers.
Puede verificar manualmente el estado de cifrado de extremo a extremo en el diálogo “Cifrado” (perfil de usuario en Android/iOS o hacer clic derecho en el elemento de lista de chat de un usuario en el escritorio). Delta Chat muestra dos huellas digitales allí. Si las mismas huellas digitales aparecen en su propio dispositivo y en el dispositivo de su contacto, la conexión es segura.
No.
Delta Chat generates secure OpenPGP keys according to the Autocrypt specification 1.1. You can export your private key but you can not import additional private keys.
In general, we do not recommend or offer users to perform manual key management. We want to ensure that security audits can focus on a few proven cryptographic algorithms instead of the full breadth of possible algorithms allowed with OpenPGP.
Yes, multiple times. The Delta Chat project continuously undergoes independent security audits and analysis, from most recent to older:
2024 December, an NLNET-commissioned Evaluation of rPGP by Radically Open Security took place. rPGP serves as the end-to-end encryption OpenPGP engine of Delta Chat. Two advisories were released related to the findings of this audit:
The issues outlined in these advisories have been fixed and are part of Delta Chat releases on all appstores since December 2024.
2024 March, we received a deep security analysis from the Applied Cryptography research group at ETH Zuerich and addressed all raised issues. See our blog post about Hardening Guaranteed End-to-End encryption for more detailed information and the Cryptographic Analysis of Delta Chat research paper published afterwards.
2023 April, we fixed security and privacy issues with the “web apps shared in a chat” feature, related to failures of sandboxing especially with Chromium. We subsequently got an independent security audit from Cure53 and all issues found were fixed in the 1.36 app series released in April 2023. See here for the full background story on end-to-end security in the web.
2023 March, Cure53 analyzed both the transport encryption of Delta Chat’s network connections and a reproducible mail server setup as recommended on this site. You can read more about the audit on our blog or read the full report here.
2020, Include Security analyzed Delta Chat’s Rust core, IMAP, SMTP, and TLS libraries. It did not find any critical or high-severity issues. The report raised a few medium-severity weaknesses - they are no threat to Delta Chat users on their own because they depend on the environment in which Delta Chat is used. For usability and compatibility reasons, we can not mitigate all of them and decided to provide security recommendations to threatened users. You can read the full report here.
2019, Include Security analyzed Delta Chat’s PGP and RSA libraries. It found no critical issues, but two high-severity issues that we subsequently fixed. It also revealed one medium-severity and some less severe issues, but there was no way to exploit these vulnerabilities in the Delta Chat implementation. Some of them we nevertheless fixed since the audit was concluded. You can read the full report here.
Yes. You can use the same profile on different devices:
Asegurate que ambos dispositivos estén en la misma Wi-Fi o red
On the first device, go to Settings → Add Second Device, unlock the screen if needed and wait a moment until a QR code is shown
En el otro dispositivo, instala Delta Chat
On the second device, start Delta Chat, select Add as Second Device, and scan the QR code from the old device
La transferencia debería comenzar después de unos segundos y durante la transferencia ambos dispositivos mostrarán el progreso. Espere hasta que termine en ambos dispositivos.
A diferencia de muchas otras aplicaciones de mensajería, después de una transferencia exitosa, ambos dispositivos son completamente independientes. No es necesario un dispositivo para que el otro funcione.
Vuelve a verificar que ambos dispositivos estén en la misma Wi-Fi o red
On Windows, go to Control Panel / Network and Internet and make sure, Private Network is selected as “Network profile type” (after transfer, you can change back to the original value)
On iOS, make sure “System Settings / Apps / Delta Chat / Local Network” access is granted
On macOS, enable “System Settings / Privacy & Security / Local Network / Delta Chat”
Your system might have a “personal firewall”, which is known to cause problems (especially on Windows). Disable the personal firewall for Delta Chat on both ends and try again
Guest Networks may not allow devices to communicate with each other. If possible, use a non-guest network.
If you still have troubles using the same network, try to open Mobile Hotspot on one device and join that Wi-Fi from the other one
Asegurate que haya suficiente espacio en el dispositivo destino
If transfer started, make sure, the devices stay active and do not fall asleep. Do not exit Delta Chat. (we try hard to make the app work in background, but systems tend to kill apps, unfortunately)
Delta Chat is already logged in on the destination device? You can use multiple profiles per device, just add another profile
If you still have problems or if you cannot scan a QR code try the manual transfer described below
This method is only recommended if “Add Second Device” as described above does not work.
Yes.
If you e.g. delete a chat or a message from your phone, it will be deleted on your desktop as soon as it comes online again.
Notable exceptions are Delete old messages from Device, as different devices may have different storage capacities, and system specific settings as notification sounds.
In Delta Chat, you can share webxdc apps, attachments with an .xdc file
extension. They can do very different things, and make Delta Chat a truly
extendable messenger.
We are very grateful for feedback on these features - do you want to share your ideas? Join the Forum to contribute. You may conveniently login via Delta Chat and a QR code scan, another rather stable experiment we run on the side (sic!).
https://meet.jit.si/$ROOM. The $ROOM variable will be a random value;
this way, you will have a new random Jitsi room every time you call someone.With a Broadcast List you can send a message to many recipients at once; the recipients cannot reply in that list. Broadcast lists are still highly experimental and will very probably be replaced by something else, stay tuned :)
Esta es una configuración experimental para algunas personas que están experimentando con reglas del lado del servidor. No todos los proveedores lo admiten, pero con algunos puede mover todos los correos con el encabezado “Chat-Version” a la carpeta DeltaChat. Normalmente, esto lo haría la aplicación Delta Chat.
Enabling “Only Fetch from DeltaChat folder” makes sense if you have both:
En este caso, Delta Chat no necesita monitorear la Bandeja de entrada, y es suficiente con monitorear solo la carpeta DeltaChat.
Note: Changing email addresses is temporarily disabled because of ongoing changes to the DeltaChat core. It should be available again in a few months.
Change your address in “Settings → Advanced → Password and Account” and enter the password of your new e-mail account (and if necessary, server settings). You will get an information notice about the fact that you are moving to a new address. An additional notice will also show up in your “Device messages” chat.
Si es posible, permite que tu antiguo proveedor de correo electrónico reenvíe todos los mensajes a tu nueva dirección.
Dile a tus contactos que cambiaste tu dirección. Escribir en chats y grupos con cifrado de extremo a extremo garantizado, hará que ellos noten tu cambio automáticamente y seguirán chateando contigo usando tu nueva dirección.
Note that Delta Chat will not retrieve messages anymore from your old e-mail provider. If you didn’t configure your e-mail provider to forward messages (step 2.) only those contacts to whom you sent a message in a guaranteed end-to-end encrypted chat will send messages to your new address.
To learn more about this the details behind this, read our blogpost on it.
Dependiendo del sistema operativo en uso, quizás se te solicite garantizar permisos a la app. Esto es lo que hace Delta Chat con esos permisos:
Al igual que con otros programas de correo electrónico como Thunderbird, K9-Mail o Outlook, el programa necesita la contraseña para que pueda usarla para enviar correos. Por supuesto, la contraseña se almacena solo en su dispositivo. La contraseña solo se transmite a su proveedor de correo electrónico (cuando inicia sesión), que tiene acceso a sus correos de todos modos.
Como Delta Chat es de Código Abierto, puedes investigar el Código Fuente si quieres verificar que tus credenciales son gestionadas de manera segura. Estamos felices de recibir críticas que hagan la aplicación más segura para todos los usuarios.
Por defecto, Delta Chat muestra todos los e-mail
At “Settings → Advanced → Show Classic E-Mails”, you can change this. You have these options:
Sí, los mensajes HTML entrantes vienen con un botón “Mostrar mensaje completo”. Los mensajes salientes siempre usan texto plano.
Delta Chat sets (and encrypts!) the classic e-mail subject automatically to the group name or to the sender name.
So if you want to set the subject yourself, for example for a formal e-mail to a business contact, you can create a group with only yourself and the recipient(s). Set the Chat Title to the Subject you want, and then send your e-mail as the first message. If the recipients don’t use Delta Chat, it will look like a normal, formal e-mail to them. You will get bonus professionalism points if you set a signature text.
Enviar una copia de sus mensajes a usted mismo asegura que recibirá sus propios mensajes en todos los dispositivos. Si tiene varios dispositivos y no habilita esta opción, solo verá los mensajes de otras personas y los mensajes que envíe desde el dispositivo actual.
La copia se envía a la bandeja de entrada y luego se mueve a la carpeta DeltaChat; no se coloca en la carpeta “Enviados”. Delta Chat nunca carga nada en la carpeta Enviados porque esto significaría cargar un mensaje dos veces (una a través de SMTP y otra a través de IMAP en la carpeta Enviados).
The default setting for “Send Copy to Self” is “on”.
La única razón por la que uno quiere ver la carpeta Enviados es si está utilizando otro programa de correo (como Thunderbird) a la vez que su aplicación Delta Chat, y desea que su MUA también participe en conversaciones de chat.
No obstante, recomendamos utilizar el cliente de escritorio Delta Chat; puede descargarlo en get.delta.chat. La opción de observar la carpeta “Enviados” podría desaparecer en el futuro. Se introdujo en un momento en que no había cliente Delta Chat Desktop disponible en todas las plataformas.
Algunas personas usan Delta Chat como un cliente de correo electrónico normal y desean mantener los correos en la bandeja de entrada, en lugar de la carpeta DeltaChat. Si deshabilita “Monitorear carpeta DeltaChat”, también debe deshabilitar “mover automáticamente a la carpeta DeltaChat”. De lo contrario, eliminar mensajes o configuraciones de dispositivos múltiples podría no funcionar correctamente.
If you use a default chat profile you can simply uninstall the app. This will automatically trigger deletion of all associated account data on the chatmail server. For more info, please refer to nine.testrun.org account-deletion for the default onboarding server, or the respective page from your chosen 3rd party chatmail server.
If you have set up your chat profile on multiple devices you need to remove it from all devices.
If you are using more than one account, but don’t want to get rid of all of them, you can remove it in the account switcher menu (on android and iOS), or in the sidebar with a right click (in the desktop client).
Accounts on classic e-mail providers will not be deleted automatically; how you can delete your account depends on your e-mail provider. We don’t have any control over e-mail accounts at those providers, so unfortunately we can’t help you with that.
If you want to continue using a classic e-mail account with other apps, but uninstall Delta Chat, it is recommended to leave any group chat before uninstalling Delta Chat. Otherwise you might receive undecryptable messages from those group chats.
Delta Chat is available for all major and some minor platforms:
The official website, https://delta.chat/download shows all options in detail
If unavailable, use the mirror at https://deltachat.github.io/deltachat-pages
Open one of the following app stores and search for “Delta Chat”: Google Play Store, F-Droid, Huawei App Gallery, Amazon App Store, iOS and macOS App Store, Microsoft Store
Check the package manager of your Linux distributions
Android APKs are also available on https://github.com/deltachat/deltachat-android/releases
Delta Chat does not receive any Venture Capital and is not indebted, and under no pressure to produce huge profits, or to sell users and their friends and family to advertisers (or worse). We rather use public funding sources, so far from EU and US origins, to help our efforts in instigating a decentralized and diverse chat messaging eco-system based on Free and Open-Source community developments.
Concretely, Delta Chat developments have so far been funded from these sources, ordered chronologically:
El proyecto de la UE NEXTLEAP financió la investigación e implementación de grupos verificados y protocolos de contacto en 2017 y 2018 y también ayudó a integrar el cifrado de extremo a extremo a través de Autocrypt.
The Open Technology Fund gave us a first 2018/2019 grant (~$200K) during which we majorly improved the Android app and released a first Desktop app beta version, and which moreover moored our feature developments in UX research in human rights contexts, see our concluding Needfinding and UX report. The second 2019/2020 grant (~$300K) helped us to release Delta/iOS versions, to convert our core library to Rust, and to provide new features for all platforms.
The NLnet foundation granted in 2019/2020 EUR 46K for completing Rust/Python bindings and instigating a Chat-bot eco-system.
In 2021 we received further EU funding for two Next-Generation-Internet proposals, namely for EPPD - e-mail provider portability directory (~97K EUR) and AEAP - email address porting (~90K EUR) which resulted in better multi-profile support, improved QR-code contact and group setups and many networking improvements on all platforms.
From End 2021 till March 2023 we received Internet Freedom funding (500K USD) from the U.S. Bureau of Democracy, Human Rights and Labor (DRL). This funding supported our long-running goals to make Delta Chat more usable and compatible with a wide range of e-mail servers world-wide, and more resilient and secure in places often affected by internet censorship and shutdowns.
2023-2024 we successfully completed the OTF-funded Secure Chatmail project, allowing us to introduce guaranteed encryption, creating a chatmail server network and providing “instant onboarding” in all apps released from April 2024 on.
In 2023 and 2024 we got accepted in the Next Generation Internet (NGI) program for our work in webxdc PUSH, along with collaboration partners working on webxdc evolve, webxdc XMPP, DeltaTouch and DeltaTauri. All of these projects are partially completed or to be completed in early 2025.
Sometimes we receive one-time donations from private individuals. For example, in 2021 a generous individual bank-wired us 4K EUR with the subject “keep up the good developments!”. 💜 We use such money to fund development gatherings or to care for ad-hoc expenses that can not easily be predicted for, or reimbursed from, public funding grants. Receiving more donations also helps us to become more independent and long-term viable as a contributor community.
Por último, pero no por ello menos importante, varios expertos pro-bono y entusiastas contribuyeron y contribuyen a los desarrollos de Delta Chat sin recibir dinero, o sólo pequeñas cantidades. Sin ellos, Delta Chat no estaría donde está hoy, ni siquiera cerca.
La financiación monetaria mencionada anteriormente es principalmente organizada por merlinux GmbH en Freiburg (Alemania), y se distribuye a más de una docena de colaboradores en todo el mundo.
Por favor, consulta Canales de contribución de Delta Chat para conocer las posibilidades de contribución tanto monetarias como otras.