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Threema

Secure Communication For Individuals and Companies·threema.com

Threema is a Swiss end-to-end encrypted messenger for text, voice, video, and file communication, available for individuals (Threema Private) and organizations (Threema Work, Threema OnPrem, Threema Gateway, Threema Broadcast). It uses a zero-knowledge architecture and does not require a phone number or email address to use. The product is positioned as a GDPR-compliant alternative to conventional messengers like WhatsApp and MS Teams for businesses, authorities, and security-critical organizations.

What it's for

WhatsApp alternativeMS Teams alternativeC-level communicationmanaging shadow ITfast internal communication via messengermobile workforce communicationbusiness continuity / out-of-band communicationone-to-many communicationGDPR-compliant communicationstrengthening cyber resilience (NIS2, DORA, CER)

Features 20

API for automated administration
Distribution lists (Android)
Emoji reactions
End-to-end encryption for messages, calls, and files
File and media sharing
Group chats
Management cockpit for centralized administration
MDM system integration
No phone number or email address required to use
Off-hours policy
Open source apps with reproducible builds
Perfect Forward Secrecy
Polls
Self-hosted deployment option (OnPrem)
Threema Broadcast for one-to-many messaging
Threema Gateway (message API)
Two-factor authentication
Voice and video calls, including group calls
White-labeling (OnPrem)
Zero-knowledge architecture

At a glance

free trialopen sourceself-hostableAPI

TypeMobile app

DeploymentHybrid

PlatformsWeb, iOS, Android

LanguagesEnglish, German, French, Spanish, Arabic

Forindividuals, small and medium-sized businesses, large enterprises, authorities, military, healthcare facilities, educational institutions, NGOs, public institutions, government

CompanyThreema AG · 2014

Integrations

Active Directory (AAD)MDM systemsOpenAIAnthropicAzureAWS

Complianceself-reported

GDPRISO 27001NIS2DORACER

Resources

Changelog

Pricing

Threema Work licenses are also stated to be available 'from CHF 12 per year' per license (currency not converted to USD). OnPrem pricing is on request. Threema Private price ($6.00) is a one-time purchase, not a monthly charge. Prices are shown identically in CHF, EUR, and USD, with the site noting 'Conversion to EUR and USD one-to-one.'

PrivateQuote

One-time purchase, not a recurring subscription

For private use only

Core$3/user/mo

Price shown as 'monthly, per user' with annual payment

Ideal for small teams; billed annually

Professional$5/user/mo

Price shown as 'monthly, per user' with annual payment

Unlimited number of employees; billed annually

OnPremQuote

Custom/quote-based pricing; contact required

Recommended number of users from 200; minimum contract duration 3 years

Preferential terms on Threema Work for NGOs, schools, and other educational institutions