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Threema. The Secure Messenger
"Is Threema. The Secure Messenger working?"
Threema. The Secure Messenger is working normally
All systems are operational. Threema. The Secure Messenger is accessible and functioning properly.
Status Chart
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Timeline
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Service Status: All systems operational and responding normally
Performance Trend (24h): Service stability is degrading
Community Reports: No issues reported by users in the last 24 hours
Global Availability: Working normally worldwide
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Recent reports
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Threema is the worldβs best-selling secure messenger and keeps your data out of the hands of hackers, corporations, and governments. The service can be used completely anonymously. Threema is open source and offers every feature one would expect from a state-of-the-art instant messenger. The app also allows you to make end-to-end encrypted voice,...
Threema is the worldβs best-selling secure messenger and keeps your data out of the hands of hackers, corporations, and governments. The service can be used completely anonymously. Threema is open source and offers every feature one would expect from a state-of-the-art instant messenger. The app also allows you to make end-to-end encrypted voice, video, and group calls. Using the desktop app and the web client, you can also use Threema from your desktop.
PRIVACY AND ANONYMITY
Threema is designed from the ground up to generate as little data on servers as possible. Group memberships and contact lists are managed on your device only and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including metadata. Threema is fully compliant with the European privacy legislation (GDPR).
ROCK-SOLID ENCRYPTION
Threema end-to-end encrypts all your communication, including messages, voice and video calls, group chats, files, and even status messages. Only the intended recipient, and nobody else, can read your messages. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on the usersβ devices to prevent backdoor access or copies.
COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.
β’ Write text and send voice messages
β’ Edit and delete sent messages on the recipientβs end
β’ Make voice, video and group calls
β’ Share videos pictures and locations
β’ Send any type of file (pdf animated gif, mp3, doc, zip, etc.)
β’ Use the desktop app or the web client to chat from your computer
β’ Create groups
β’ Conduct polls with the poll feature
β’ Choose between a dark and a light theme
β’ React to messages with emojis
β’ Verify the identity of a contact by scanning their personal QR code
β’ Use Threema as anonymous instant messaging tool
β’ Synchronize your contacts (optional)
SERVERS IN SWITZERLAND
All our servers are located in Switzerland, and we develop our software in-house.
FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously β no need to give up private information or to open an account.
OPEN SOURCE AND AUDITS
The source code of the Threema app is open for everyone to review. On top of that, renowned experts are regularly commissioned to conduct systematic security audits of Threemaβs code.
NO ADS, NO TRACKERS
Threema is not financed by advertising and does not collect user data.
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq
Thanks for respecting our privacy! Bug: when scanning a contacts QR, the scanner hides the soft navigation buttons, with no way to close it (if accidently enabled); I had to reboot the phone
U
Ulf Hednar
Oct 26, 2025
Linking this app to the new Desktop 2.0 Beta is a mess and does not work. Why are we being forced to run untested Beta software that dows not work? I am deeply displeased. Is there to pay more to have this app work decently?
K
Kaarthik
Oct 23, 2025
File picker not working inside samsung secure folder. No way to back up and restore possible inside secure folder.
G
George Grigalashvili
Oct 20, 2025
A lot of obvious features are missing. Support for multi platform device usage in parallel is a nightmate. Far behind from competition in terms of features, far ahead in terms of security. π€·ββοΈ
C
Constantinos LISGARIS
Oct 15, 2025
All one needs.
O
Oliver Schmutz
Oct 13, 2025
supr sach
K
Kristian
Oct 11, 2025
Eine sehr enttΓ€uschende App. Telefonieren funktioniert einfach nur in 50% der FΓ€lle. Es lΓ€utet nie, und man bekommt eine Benachrichtigung ΓΌber einen verpassten Anruf. Ab und zu klappt es. Zum Telefonieren steige ich wieder auf WhatsApp um.
R
Rick 1978 knowledge!
Oct 3, 2025
Damn right π, this is the best one out there I've been using it for a few weeks now and I gotta say I'm really not disappointed at all thanks to the team!!!
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