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[#]: subject: "Software Privacy Day: Use Delta Chat, an open source chat tool"
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[#]: via: "https://opensource.com/article/22/1/delta-chat-software-privacy-day"
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[#]: author: "Alan Smithee https://opensource.com/users/alansmithee"
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[#]: collector: "lujun9972"
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[#]: translator: "geekpi"
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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Software Privacy Day: Use Delta Chat, an open source chat tool
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======
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The best chat application is the one that isn't a chat application.
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![Chat via email][1]
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It's Software Privacy Day again, the day meant to encourage users everywhere to spare a thought about where their data actually goes when it's posted on, over, or through the Internet. One of the cottage industries around Internet communication that seems to ebb and flow in popularity is the venerable chat application. People use chat applications for all manner of conversations, and most people don't think about what bots are recording and monitoring what's being said, whether it's to effectively target ads or just to build a profile for future use. This makes chat applications particularly vulnerable to poor privacy practices, but luckily there are several open source, privacy-focused apps out there, including [Signal][2], [Rocket.Chat][3], and [Mattermost][4]. I've run Mattermost and Rocket.Chat, and I use Signal, but the application I'm most excited about is Delta Chat, the chat service that's so hands-off it doesn’t even use chat servers. Instead, Delta Chat uses the most massive and diverse open messaging system you already use yourself. It uses email to send and receive messages through a chat application, and it features end-to-end encryption with [Autocrypt][5].
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### Install Delta Chat
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Delta Chat uses standard email protocol as its back end, but to you and me as mere users, it appears and acts exactly like a chat application. That means you need to install the open source Delta Chat app.
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On Linux, you can install Delta Chat as a [Flatpak][6] or from your software repository.
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On macOS and Windows, download an installer from [delta.chat/downloads][7].
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On Android, you can install Delta Chat from the Play Store or the open source [F-droid repository][8].
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On iOS, install Delta Chat from the App Store.
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Because Delta Chat uses email for message delivery, you can also receive messages to your inbox if you're away from your chat app. Yes, you can use Delta Chat even without having Delta Chat installed!
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### Configure Delta Chat
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When you first launch Delta Chat, you must log in to your email account. This tends to be the hardest part about Delta Chat because it requires you to either know details about your email server or else to create an "app password" in your email provider's security settings.
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If you're running your own server and you have everything configured as the usual defaults (port 993 for incoming IMAP, port 465 for outgoing SMTP, SSL/TLS enabled), then you can probably just type in your email address and your password and continue.
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![Delta Chat login][9]
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(Opensource.com [CC BY-SA 4.0][10])
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If you're running your own server but you have custom settings, then click the **Advanced** button and enter your settings. You may need to do this if you're using an unusual subdomain to denote your mail server, or a custom port, or a complex login and password configuration.
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If you're using an email provider like Gmail, Fastmail, Yahoo, or similar, then you must create an app password so you can login to your account through Delta Chat instead of a web browser. Many email providers restrict login in order to avoid endless bots and scripts making attempts to brute force their ways into people's accounts, so to your provider, Delta Chat looks a lot like a bot. When you grant Delta Chat special permissions, you're alerting your email provider that lots of short messages from a remote app is expected behavior.
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Each email provider has a different way of providing app passwords, but Fastmail (in my opinion) makes it the easiest:
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1. Navigate to **Settings**
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2. Click **Passwords & Security**
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3. Next to **Third-party apps**, click the **Add** button
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Verify your password, and create a new app password. Use the password you create to login to Delta Chat.
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![Fastmail app password][11]
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(Opensource.com [CC BY-SA 4.0][10])
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### Chatting with Delta Chat
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Once you've gotten past the hurdle of logging in, the rest is easy. Because Delta Chat just uses email, you can add friends by email address rather than by a chat application username or phone number. You can technically add any email address to Delta Chat. It is, after all, just an email app with a very specific use case. It's polite to tell your friend about Delta Chat, though, rather than expect them to carry out a casual chat with you through their email client.
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The application, whether you're running it on your phone or your computer, looks exactly like you'd expect a chat application to look. You can initiate chats, send messages, and hang out with friends over encrypted text.
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![Delta Chat chat list][12]
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(Image courtesy Delta Chat)
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### Get chatting
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Delta Chat is decentralized, fully encrypted, and relies on a proven infrastructure. Thanks to Delta Chat, you get to choose what servers sit between you and your contacts, and you can communicate in private. There's no complex server to install, no hardware to maintain. It's a simple solution to what seems like a complex problem, and it's open source. There's every reason to try it, especially on Software Privacy Day.
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/22/1/delta-chat-software-privacy-day
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作者：[Alan Smithee][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://opensource.com/users/alansmithee
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[b]: https://github.com/lujun9972
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[1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/email_chat_communication_message.png?itok=LKjiLnQu (Chat via email)
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[2]: https://opensource.com/article/21/9/alternatives-zoom#signal
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[3]: https://opensource.com/article/22/1/rocketchat-open-source-communications-platform-puts-data-privacy-first
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[4]: https://opensource.com/education/16/3/mattermost-open-source-chat
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[5]: https://autocrypt.org/
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[6]: https://opensource.com/article/21/11/install-flatpak-linux
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[7]: https://delta.chat/en/download
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[8]: https://f-droid.org/app/com.b44t.messenger
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[9]: https://opensource.com/sites/default/files/delta-chat-log-in_0.jpg (Delta Chat login)
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[10]: https://creativecommons.org/licenses/by-sa/4.0/
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[11]: https://opensource.com/sites/default/files/fastmail-app-password.jpg (Fastmail app password)
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[12]: https://opensource.com/sites/default/files/delta-chat-google-play-release-chat-list-light.png (Delta Chat chat list)
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@ -0,0 +1,97 @@
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[#]: subject: "Software Privacy Day: Use Delta Chat, an open source chat tool"
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[#]: via: "https://opensource.com/article/22/1/delta-chat-software-privacy-day"
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[#]: author: "Alan Smithee https://opensource.com/users/alansmithee"
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[#]: collector: "lujun9972"
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[#]: translator: "geekpi"
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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软件隐私日：使用 Delta Chat，一个开源的聊天工具
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======
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最好的聊天程序是不属于聊天程序的程序。
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![Chat via email][1]
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又到了“软件隐私日”，这一天旨在鼓励各地的用户考虑一下，当他们的数据被发布到互联网上，或通过互联网发布时，他们的数据究竟去了哪里。古老的聊天应用是互联网通信领域的一个似乎在流行起起落落的家庭手工业。人们使用聊天应用进行各种形式的对话，大多数人没有想到机器人正在记录和监控他们所说的话，无论是为了有效地定位广告还是只是为了建立一个档案供将来使用。这使得聊天应用特别容易受到不良隐私做法的影响，但幸运的是，现在有几个开源的、注重隐私的应用，包括 [Signal][2]、[Rocket.Chat][3] 和 [Mattermost][4]。我已经运行了 Mattermost 和 Rocket.Chat，我也在使用 Signal，但我最兴奋的应用是 Delta Chat，这个聊天服务非常方便，甚至不使用聊天服务器。相反，Delta Chat 使用的是你已经使用的最大规模和最多样化的开放信息系统。它使用电子邮件，通过聊天应用发送和接收信息，并以 [Autocrypt][5] 的端到端加密为特色。
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### 安装 Delta Chat
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Delta Chat 使用标准的电子邮件协议作为它的后端，但对于作为普通用户的你和我来说，它的外观和行为完全像一个聊天应用。这意味着你需要安装开源的 Delta Chat 应用。
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在 Linux 上，你可以从 [Flatpak][6] 包或你的软件库中安装 Delta Chat。
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在 macOS 和 Windows 上，从 [delta.chat/downloads][7] 下载一个安装程序。
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在安卓系统上，你可以从 Play Store 或开源的 [F-droid 仓库][8]安装 Delta Chat。
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在 iOS 系统中，从 App Store 安装 Delta Chat。
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因为 Delta Chat 使用电子邮件来传递信息，所以如果你不在你的聊天应用中，你也可以在收件箱中收到信息。是的，即使没有安装 Delta Chat，你也可以使用 Delta Chat！
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### 配置 Delta Chat
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当你第一次启动 Delta Chat 时，你必须登录到你的电子邮件账户。这往往是 Delta Chat 最难的部分，因为它要求你了解你的电子邮件服务器的详细信息，或者在你的电子邮件提供商的安全设置中创建一个“应用密码”。
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如果你使用的是自己的服务器，并且所有配置都是默认的（993 端口用于接收 IMAP，465 端口用于发送 SMTP，启用 SSL/TLS），那么你可以直接输入你的电子邮件地址和密码，然后继续。
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![Delta Chat login][9]
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（Opensource.com [CC BY-SA 4.0][10]）
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I如果你运行自己的服务器，但你有自定义设置，那么点击**高级**按钮，输入你的设置。如果你使用一个不寻常的子域来表示你的邮件服务器，或一个自定义端口，或一个复杂的登录和密码配置，你可能需要这样做。
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如果你使用的是 Gmail、Fastmail、Yahoo 或类似的电子邮件供应商，那么你必须创建一个应用密码，这样你就可以通过 Delta Chat 而不是网络浏览器登录到你的账户。许多电子邮件供应商限制登录，以避免无休止的机器人和脚本试图用暴力手段进入人们的账户，所以对你的供应商来说，Delta Chat 看起来很像机器人。当你授予 Delta Chat 特殊权限时，你就是在提醒你的电子邮件提供商，从一个远程应用发出大量的短信息是预期的行为。
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每个电子邮件提供商都有不同的提供应用密码的方式，但 Fastmail（在我看来）是最简单的：
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1. 进入**设置**
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2. 点击**密码和安全**。
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3. 在**第三方应用**的旁边，点击**添加**按钮
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验证你的密码，并创建一个新的应用密码。使用你创建的密码登录 Delta Chat。
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![Fastmail app password][11]
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（Opensource.com [CC BY-SA 4.0][10]）
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### 使用 Delta Chat 聊天
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当你克服了登录的障碍，剩下的就很容易了。因为 Delta Chat 只使用电子邮件，你可以通过电子邮件地址而不是通过聊天程序的用户名或电话号码来添加朋友。从技术上讲，你可以在 Delta Chat 上添加任何电子邮件地址。毕竟，它只是一个有特定使用场景的电子邮件应用。不过，告诉你的朋友 Delta Chat 是很有礼貌的，而不是期望他们通过他们的电子邮件客户端与你进行随意的聊天。
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无论你是在手机还是在电脑上运行这个应用，其外观都与你所期望的聊天应用完全一样。你可以发起聊天，发送消息，并通过加密文本与朋友闲聊。
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![Delta Chat chat list][12]
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（图片来源：Delta Chat）
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### 开始聊天
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Delta Chat 是去中心化的，完全加密的，并依赖于一个成熟的基础设施。 多亏 Delta Chat，你可以选择你和你的联系人之间的服务器，你可以在私下里交流。没有复杂的服务器需要安装，没有硬件需要维护。这是一个看似复杂问题的简单解决方案，而且是开源的。我们有充分的理由去尝试它，尤其是在软件隐私日。
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/22/1/delta-chat-software-privacy-day
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作者：[Alan Smithee][a]
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选题：[lujun9972][b]
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译者：[geekpi](https://github.com/geekpi)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://opensource.com/users/alansmithee
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[b]: https://github.com/lujun9972
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[1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/email_chat_communication_message.png?itok=LKjiLnQu (Chat via email)
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[2]: https://opensource.com/article/21/9/alternatives-zoom#signal
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[3]: https://opensource.com/article/22/1/rocketchat-open-source-communications-platform-puts-data-privacy-first
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[4]: https://opensource.com/education/16/3/mattermost-open-source-chat
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[5]: https://autocrypt.org/
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[6]: https://opensource.com/article/21/11/install-flatpak-linux
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[7]: https://delta.chat/en/download
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[8]: https://f-droid.org/app/com.b44t.messenger
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[9]: https://opensource.com/sites/default/files/delta-chat-log-in_0.jpg (Delta Chat login)
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[10]: https://creativecommons.org/licenses/by-sa/4.0/
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[11]: https://opensource.com/sites/default/files/fastmail-app-password.jpg (Fastmail app password)
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[12]: https://opensource.com/sites/default/files/delta-chat-google-play-release-chat-list-light.png (Delta Chat chat list)
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