---
title: "Threema"
description: "Threema is a built-in integration for Home Assistant. It has 10 installs sharing analytics and needs the vendor's cloud."
canonical: "https://vulpo.app/integrations/core/threema"
url: "https://vulpo.app/integrations/core/threema.md"
last-updated: "2026-11-14"
version: "1.4"
---

# Threema

> Threema is a built-in integration for Home Assistant. It has 10 installs sharing analytics and needs the vendor's cloud.

[Open in My Home Assistant](https://my.home-assistant.io/redirect/config_flow_start/?domain=threema)

## Supports

- **Uses the vendor's cloud**: Needs an internet connection and an account with the vendor.
- **Set up in the UI**: Add it in Settings, Devices and services. Nothing to download.
- **Silver quality**: Home Assistant's own rating of its code and setup experience.
- **Updated with Home Assistant**: Ships and updates with every Home Assistant release.

## Setting it up

It is added under Settings, Devices and services, with Add integration.

### Gateway credentials

- **API secret**: Secret you received from Threema
- **Gateway ID**: ID of your Gateway, including '\*', e.g.: \*ABCD123
- **Private key (optional, enables E2E encryption)**: Private key as hex string (64 characters). A 'private:' prefix, as used by Threema's key export tools, is accepted and stripped automatically. Leave empty for simple (non-E2E) mode.
- **Public key to verify against (optional)**: Never stored — only checked once against the private key above to catch copy-paste mistakes. Paste the public key you registered at gateway.threema.ch (a 'public:' prefix is accepted).

### Re-authenticate Threema

- **API secret**

Texts from Home Assistant's source code, [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0).

## At a glance

- Kind: Built-in integration
- Category: [Messaging and notifications](https://vulpo.app/integrations/category/messaging-and-notifications.md), Chat apps
- Number: 10 installs sharing analytics
- Connection: Needs the vendor's cloud
- Upkeep: Part of Home Assistant
- Needs: Built into Home Assistant
- Quality scale: Silver quality scale
- Domain: `threema`
- Source: <https://www.home-assistant.io/integrations/threema/>

In Vulpo: Entity card (read-only)

Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about)

Last updated 2026-11-14. Source: https://vulpo.app/integrations/core/threema

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