Threema encrypts all your communications end-to-end including messages, group chats, files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us.
Versatile and Feature-rich
Threema makes secure communications easy and fun. You can send photos, videos, voice messages, QR codes, polls and any type of file (PDF, GIF, MP3, DOC, ZIP, etc.).
Threema is designed to generate as little data on servers as possible: Group memberships and contact lists are managed on your device only, messages are immediately deleted after they have been delivered. This effectively prevents the collection of meta data.
Unique Poll Feature
The integrated poll feature in Threema makes decisions easy. Easily poll your friends on anything in just a few simple steps and get immediate results.
Verify your contacts simply by scanning their QR code or comparing key fingerprints. This makes sure you're really talking to the intended person and not a man-in-the middle.
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.
Open Message API
Threema Gateway allows you to encrypt, send, receive and decrypt messages directly in your own applications. Threema's Message API supports end-to-end encryption right from the source to the recipient. The software is freely available with an open source license.
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.