Threema

@threemaapp
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Seriously secure communication.

If you have questions, please contact us via https://threema.id/%2ASUPPORT or support@threema.ch.

Websitehttps://threema.com
Downloadhttps://threema.com/en/download
Supporthttps://threema.com/en/support/private
Impressumhttps://threema.com/en/impressum
The do’s and don’ts of chat communication (or how to mess up texting): https://threema.com/bp/unwritten-chat-rules
The Unwritten Rules of Chat Communication

Do you think instant messaging is the same as any other form of written communication? Think again. Over time, various unwritten rules have emerged that need to be observed if you want to get your chat message across correctly. We have compiled a few of these rules of etiquette in this (not-quite-serious) blog post.

Threema

Here’s another tip for users of Threema’s new desktop app (beta):

First, type a colon to bring up a list of emojis. Then, narrow down the list by entering a keyword, and use ⬆️/⬇️ to select the emoji you like.

Watching someone type… then stop… then type again… feels like a digital version of “we need to talk.”
📐💬🔐 If you’re at @oxidize, join our engineers Lenny and Theo this afternoon and learn about the ins and outs of designing a cross-platform library for encrypted messaging: https://oxidizeconf.com/sessions/designing-a-cross-platform-library-for-encrypted-messaging
Oxidize Conference - 16 - 18 September 2025

The conference for industrial Rust users

Oxidize 2025
People who say they have nothing to hide apparently think encryption is only for criminals. Here’s our take on that: https://threema.com/bp/encryption-and-criminality
Privacy for Everyone vs. Mass Surveillance in the Name of Crime Prevention

Have you ever heard the phrase “I have nothing to hide”? It’s often used by people who advocate government surveillance as a means of combating crime. According to this logic, however, anyone who is not a criminal has nothing to hide and therefore does not need an encrypted communication channel. This assumption ...

Threema
Screen sharing has entered the chat. 👀
https://threema.com/bp/screen-sharing-on-desktop
“I have nothing to hide.” – What’s your response?
Got a chat you really want to keep to yourself? Mark it as private ⬇️ https://threema.com/bp/private-chats-en
How to Protect Your Chats from Prying Eyes

Whether you’re organizing a surprise party, planning a marriage proposal, or running a diary note group, sometimes there are messages or chats that are not meant for prying eyes. In Threema, these chats can be marked as private and even hidden from the chat overview.

Threema
Thank you for your feedback on the new app colors! 🗣 To enhance readability and increase contrast, we’ve refined the color scheme with the most recent updates. 🎨✨

Pro tip for users of Threema’s new desktop app (beta):

Press ⬆️ to edit your last message.