Threema Work Threema Broadcast Threema Gateway

English Deutsch

Security and Privacy as the Cornerstones of Digital Communication

Privacy Without Compromise

Zero-Knowledge Security and Legal Compliance
WhatsApp Alternative

MS Teams Alternatives

C-Level Communication

Fast Internal Communication via Messenger

Mobile Workforce

Business Continuity: Out-of-Band Communication

One-to-Many Communication

GDPR-Compliant Communication

Strengthen Cyber Resilience: NIS2, DORA, and CER

Public Authorities

Healthcare

Education
Mercedes-Benz Group AG

EDEKA

City of Frankfurt am Main

Bavarian State Ministry of Justice

TK Elevator

Success Stories

What is data privacy? And why should your business care?

Fun Facts to Celebrate World Emoji Day

How to Get Your Friends to Use Threema

Online Ads and Data Privacy

Air Gap: Communication in an Isolated System

Blog

Cryptography Whitepaper

Secure Messaging in Public Authorities

Business Continuity Management

Comparison of Business Messaging Solutions

WhatsApp Alternative for Businesses

European Cybersecurity Regulations: NIS2, DORA, and CER

The Challenge of Cybersecurity

Study: Cybersecurity and Communication Tools

Events

Documents

FAQ

Download

Threema Work Threema Broadcast Threema Gateway

English Deutsch

Changelog
Threema Work 5.5.3k for iOS

Back to overview

Threema Work 5.5.3k for iOS

Various bug fixes and other improvements

About us
- Why Threema
- Privacy
- Security
- Features

Products

Downloads

Use Cases

Industries

Resources

Company

Pricing
- Overview
- Get started

Follow us

Made in Switzerland © 2025 Threema GmbH.

swiss made software + swiss hosting

swiss digital services