Threema Integration Docs

[LukasQ]

Add user documentation for the new Threema integration targeting HA 2026.4. Covers E2E encrypted messaging via Threema Gateway, config flow setup, send_message action, and QR code verification entity.

Proposed change

Privacy matters. Threema is one of the few messengers that doesn't require a phone number, is fully end-to-end encrypted by default, and is open source. With over 12 million users — especially popular in the DACH region — it's a natural fit for Home Assistant
This integration brings Threema Gateway support to HA Core, enabling users to send secure text messages from their automations. It supports both E2E encrypted and simple transport modes, key pair generation during setup, and a QR code entity for identity verification — staying true to Threema's security-first philosophy.

Logos and Code PRs

Type of change

• Spelling, grammar or other readability improvements (current branch).
• Adjusted missing or incorrect information in the current documentation (current branch).
• Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • I've opened up a PR to add logos and icons in Brands repository.
• Added documentation for a new feature I'm adding to Home Assistant (next branch).
• Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase: New: Threema Integration core#165993
• Link to parent pull request in the Brands repository: Added Threema Brand brands#9994

Checklist

• This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• The documentation follows the Home Assistant documentation standards.

[netlify]

✅ Deploy Preview for home-assistant-docs ready!

Name	Link
🔨 Latest commit	09c7978
🔍 Latest deploy log	https://app.netlify.com/projects/home-assistant-docs/deploys/69bbc8310d786b0008a86848
😎 Deploy Preview	https://deploy-preview-44160--home-assistant-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[Copilot]

Pull request overview

This pull request adds new user-facing documentation for the Threema integration, but it also bundles a large set of broader documentation edits, site layout/accessibility changes (TOC + “back to top”), redirects, and dependency bumps across the docs website.

Changes:

• Add new integration docs for Threema (Gateway-based encrypted messaging) and Heatit, plus a new Litter-Robot blueprint.
• Update many existing docs pages for wording, structure, and consistency (for example, “Result:”/“Troubleshooting:” formatting, new/remodeled sections).
• Update the docs site UI and infrastructure: TOC behavior, new back-to-top button, heading-level changes in includes, redirects cleanup, and Ruby/Node dependency updates.

Reviewed changes

Copilot reviewed 142 out of 197 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
source/voice_control/worlds-most-private-voice-assistant.markdown	Minor formatting cleanup.
source/voice_control/voice_remote_local_assistant.markdown	Copy edits and formatting improvements.
source/voice_control/voice_remote_cloud_assistant.markdown	Adds local-guide link, formatting tweaks.
source/voice_control/using_tts_in_automation.markdown	Disables TOC for page.
source/voice_control/troubleshooting_the_s3_box.markdown	“Result” formatting normalization.
source/voice_control/thirteen-usd-voice-remote.markdown	“Troubleshooting/Result” formatting normalization.
source/voice_control/s3_box_voice_assistant.markdown	“Troubleshooting” formatting normalization.
source/voice_control/s3-box-customize.markdown	“Result” formatting normalization.
source/voice_control/install_wake_word_add_on.markdown	Wording changes; duplicated bullets introduced.
source/voice_control/index.markdown	Reworded intro and expanded satellite options list.
source/voice_control/create_wake_word.markdown	Formatting changes; duplicated bullets introduced.
source/voice_control/apple.markdown	Adds iOS Voice Control accessibility trigger steps.
source/voice_control/android.markdown	Formatting and spacing cleanup.
source/more-info/unsupported/source_mods.markdown	Removes page content (deleted file).
source/more-info/unsupported/content_trust.markdown	Removes page content (deleted file).
source/ios/nfc.markdown	Removes placeholder landing page (deleted file).
source/ios/index.markdown	Removes redirect stub (deleted file).
source/ios/dev-auth.markdown	Removes redirect stub (deleted file).
source/ios/beta.markdown	Removes redirect stub (deleted file).
source/ios/beta-auth.markdown	Removes redirect stub (deleted file).
source/android/index.markdown	Removes redirect stub (deleted file).
source/installation/raspberrypi.markdown	“Troubleshooting” formatting normalization.
source/installation/index.html	Terminology change to “microSD memory card”.
source/images/getting-started/weather_card_details_01.png	Adds/updates onboarding screenshot asset.
source/images/getting-started/onboarding_pick_different_card_01.png	Adds/updates onboarding screenshot asset.
source/images/getting-started/onboarding_edit_dashboard_01.png	Adds/updates onboarding screenshot asset.
source/images/getting-started/onboarding_dashboard_delete_card.png	Adds/updates onboarding screenshot asset.
source/images/getting-started/onboarding_dashboard_01.png	Adds/updates onboarding screenshot asset.
source/images/getting-started/onboarding_card_settings_02.png	Adds/updates onboarding screenshot asset.
source/images/getting-started/onboarding_card_settings_01.png	Adds/updates onboarding screenshot asset.
source/images/dashboards/dashboards-add-dashboard-selector.png	Dashboard selector screenshot update/removal use.
source/green/styles.css	Landing page style tweaks.
source/green/index.html	Heading hierarchy adjustments; hero H1 consolidation.
source/getting-started/onboarding_dashboard.markdown	Restructures dashboard onboarding steps.
source/getting-started/onboarding.markdown	Disables TOC; “Result” formatting normalization.
source/getting-started/join-the-community.markdown	Disables TOC.
source/dashboards/views.markdown	“Result” formatting normalization.
source/dashboards/dashboards.markdown	Updates dashboard option naming; result formatting.
source/dashboards/cards.markdown	Expanded intro; fixes links; refines instructions.
source/dashboards/badges.markdown	Major rewrite: description, related links, text polish.
source/common-tasks/os.markdown	“Troubleshooting” formatting normalization.
source/changelogs/core-2026.3.markdown	Adds 2026.3.1 and 2026.3.2 patch notes.
source/blueprints/integrations/litterrobot_clean_area_on_cycle.yaml	New blueprint for vacuum cleaning after cycle.
source/_redirects	Adds redirects for removed pages; adds webhook redirect.
source/_layouts/default.html	TOC markup change; adds back-to-top button.
source/_integrations/zwave_js.markdown	“Troubleshooting” formatting normalization.
source/_integrations/zha.markdown	Clarifies IEEE address casing requirement.
source/_integrations/wled.markdown	Restructures into “Supported functionality”.
source/_integrations/webhook.markdown	Removes legacy redirect page (deleted file).
source/_integrations/waterfurnace.markdown	Adds “Removing the integration” section.
source/_integrations/vesync.markdown	Adds a supported humidifier model.
source/_integrations/vacuum.markdown	Adds area-mapping + automation guidance section.
source/_integrations/uhoo.markdown	Adds “Influenza index” sensor mention.
source/_integrations/tplink_omada.markdown	Adds OC220 controller to supported list.
source/_integrations/timer.markdown	Trailing whitespace cleanup.
source/_integrations/threema.markdown	New integration docs for Threema messaging.
source/_integrations/thread.markdown	“Troubleshooting” formatting normalization.
source/_integrations/tesla_fleet.markdown	Clarifies redirect URI options.
source/_integrations/telegram_bot.markdown	Updates chat ID instructions; adds trusted networks note.
source/_integrations/switchbot_cloud.markdown	Updates app navigation path for token/secret.
source/_integrations/spotify.markdown	Updates prerequisites (Premium requirement note).
source/_integrations/smartthings.markdown	Adds diagnostics section + feature request guidance.
source/_integrations/slide_local.markdown	Trailing whitespace cleanup.
source/_integrations/slack.markdown	Trailing whitespace cleanup.
source/_integrations/sky_remote.markdown	Adds spacing between command groups.
source/_integrations/siren.mqtt.markdown	Fixes YAML formatting for description block.
source/_integrations/simplisafe.markdown	Trailing whitespace cleanup.
source/_integrations/simplepush.markdown	Fixes heading spacing.
source/_integrations/simplefin.markdown	Trailing whitespace cleanup.
source/_integrations/signal_messenger.markdown	Reformats setup requirements section.
source/_integrations/shell_command.markdown	Trailing whitespace cleanup.
source/_integrations/seventeentrack.markdown	Removes package-level attributes section.
source/_integrations/serial.markdown	Fixes YAML key spacing.
source/_integrations/sensor.rest.markdown	Documents scan_interval; improves timeout description.
source/_integrations/sensor.mqtt.markdown	Fixes code fence formatting.
source/_integrations/script.markdown	Trailing whitespace cleanup.
source/_integrations/schedule.markdown	Trailing whitespace cleanup.
source/_integrations/saunum.markdown	Moves supported devices section; updates blueprint link.
source/_integrations/saj.markdown	Trailing whitespace cleanup.
source/_integrations/russound_rio.markdown	Trailing whitespace cleanup.
source/_integrations/proxmoxve.markdown	Major rewrite: prerequisites, permissions, troubleshooting.
source/_integrations/plaato.markdown	Fixes list indentation and spacing.
source/_integrations/ping.markdown	Trailing whitespace cleanup.
source/_integrations/pilight.markdown	Trailing whitespace cleanup.
source/_integrations/picnic.markdown	Trailing whitespace cleanup; small wording fixes.
source/_integrations/philips_js.markdown	Trailing whitespace cleanup.
source/_integrations/persistent_notification.markdown	Fixes line wrapping.
source/_integrations/openai_conversation.markdown	Adds prerequisites section; clarifies endpoint limitation.
source/_integrations/ollama.markdown	Updates FAQ link target.
source/_integrations/media_player.markdown	Removes outdated “only supported on …” claim.
source/_integrations/matter.markdown	Fixes spacing in troubleshooting bullet.
source/_integrations/mastodon.markdown	Adds use cases; clarifies account detail behavior.
source/_integrations/litterrobot.markdown	Adds supported devices, data updates, examples, limitations.
source/_integrations/leviton_z_wave.markdown	Adds supported devices list; adjusts heading level.
source/_integrations/indevolt.markdown	Updates prerequisites step; textlint directives added.
source/_integrations/immich.markdown	Fixes YAML example commas.
source/_integrations/heatit.markdown	New brand integration page (Z-Wave WWHA).
source/_integrations/google_drive.markdown	Adds UI navigation to open Drive folder.
source/_integrations/ghost.markdown	Updates quality scale and minimum Ghost version.
source/_integrations/fritzbox_callmonitor.markdown	Adds DECT repeater caveat.
source/_integrations/denonavr.markdown	Adds Marantz AV8805 to supported list.
source/_integrations/blueprint.markdown	Removes legacy redirect page (deleted file).
source/_integrations/automation.markdown	Removes legacy redirect page (deleted file).
source/_integrations/anthropic.markdown	Adds “AI” category.
source/_integrations/airobot.markdown	Restructures use cases/examples; updates blueprint link.
source/_integrations/airgradient.markdown	Trailing whitespace cleanup.
source/_integrations/aftership.markdown	Trailing whitespace cleanup.
source/_integrations/acaia.markdown	Trailing whitespace cleanup.
source/_includes/site/sidebar.html	Changes heading tags for sidebar sections.
source/_includes/site/footer.html	Removes external-link icons from footer links.
source/_includes/post/sharing.html	Changes heading tag for sharing section.
source/_includes/javascripts/scripts.html	Adds back-to-top + TOC “current section” JS.
source/_includes/integrations/option_flow.md	Rewrites option flow steps + adds screenshot.
source/_includes/installation/container.md	Updates Docker Engine minimum version guidance.
source/_includes/custom/news.html	Changes heading tags in homepage news include.
source/_includes/common-tasks/update.md	“Troubleshooting” formatting normalization.
source/_includes/common-tasks/third-party-addons.md	“Result” formatting normalization.
source/_includes/common-tasks/network_storage.md	“Troubleshooting” formatting normalization.
source/_includes/common-tasks/file_access.md	Expands file editor basepath instructions.
source/_includes/common-tasks/data_disk.md	“Result” formatting normalization.
source/_includes/common-tasks/beta_version.md	“Troubleshooting” formatting normalization.
source/_includes/common-tasks/backups.md	“Result” formatting normalization.
source/_includes/asides/voice_navigation.html	Changes headings; retains icon markup in sidebar.
source/_includes/asides/recent_posts.html	Changes heading tags.
source/_includes/asides/recent_categories.html	Changes heading tags.
source/_includes/asides/organizing_navigation.html	Changes heading tags.
source/_includes/asides/installation_navigation.html	Changes heading tags.
source/_includes/asides/help_navigation.html	Changes heading tags; removes external icon.
source/_includes/asides/hassio_navigation.html	Changes heading tags.
source/_includes/asides/getting_started_navigation.html	Changes heading tags; removes external icons.
source/_includes/asides/faq_navigation.html	Changes heading tags.
source/_includes/asides/docs_sitemap.html	Removes external icons; link formatting tweaks.
source/_includes/asides/docs_navigation.html	Changes heading tags.
source/_includes/asides/dashboards_navigation.html	Changes heading tags; removes external icon markup.
source/_includes/asides/conference_navigation.html	Changes heading tags.
source/_includes/asides/component_navigation.html	Changes heading tags.
source/_includes/asides/common_tasks_navigation.html	Changes heading tags.
source/_includes/asides/cloud_navigation.html	Changes heading tags.
source/_includes/asides/categories.html	Changes heading tags.
source/_includes/asides/about.html	Changes heading tags; removes external icons.
source/_faq/release.markdown	Trailing whitespace cleanup.
source/_docs/tools/dev-tools.markdown	Trailing whitespace cleanup.
source/_docs/tools.markdown	Disables TOC.
source/_docs/scripts/conditions.markdown	Line wrap cleanup.
source/_docs/scene.markdown	Fixes YAML key spacing.
source/_docs/organizing/labels.markdown	“Result” formatting normalization.
source/_docs/organizing/floors.markdown	“Result” formatting normalization.
source/_docs/organizing/categories.markdown	“Result” formatting normalization.
source/_docs/organizing/areas.markdown	Expands content; adds new sections and steps.
source/_docs/organizing.markdown	Clarifies grouping behavior; list formatting.
source/_docs/locked_out.md	“Troubleshooting” formatting normalization.
source/_docs/energy/water.markdown	Trailing whitespace cleanup.
source/_docs/energy/gas.markdown	Trailing whitespace cleanup.
source/_docs/energy.markdown	Disables TOC.
source/_docs/configuration/troubleshooting.markdown	Reworks debug logs/diagnostics steps.
source/_docs/configuration/splitting_configuration.markdown	Trailing whitespace cleanup.
source/_docs/configuration/packages.markdown	Trailing whitespace cleanup.
source/_docs/configuration/customizing-devices.markdown	Removes image; “Result” formatting normalization.
source/_docs/configuration/basic.markdown	“Troubleshooting” formatting normalization.
source/_docs/blueprint/tutorial.markdown	Trailing whitespace cleanup.
source/_docs/blueprint/selectors.markdown	Fixes trailing spaces.
source/_docs/backend.markdown	Disables TOC; trailing whitespace cleanup.
source/_docs/automation/modes.markdown	Trailing whitespace cleanup.
source/_docs/automation/editor.markdown	“Result” formatting normalization.
source/_docs/automation/condition.markdown	Disables TOC.
source/_docs/automation/action.markdown	Disables TOC.
source/_docs/authentication/providers.markdown	Trailing whitespace cleanup.
source/_docs/authentication/multi-factor-auth.markdown	“Result” formatting normalization; whitespace cleanup.
source/_data/products.yml	Updates distributor URLs; adds new distributor.
source/_dashboards/sections.markdown	Documents footer editing + footer YAML options.
source/_dashboards/picture.markdown	Trailing whitespace cleanup.
source/_dashboards/markdown.markdown	Trailing whitespace cleanup.
source/_dashboards/logbook.markdown	Trailing whitespace cleanup.
source/_dashboards/gauge.markdown	Fixes trailing spaces.
source/_dashboards/energy.markdown	Adds show_only_totals config option.
source/_dashboards/conditional.markdown	Trailing whitespace cleanup.
source/_dashboards/calendar.markdown	Fixes broken alt text line wrapping.
sass/homeassistant/base/_navigation.scss	Adjusts header grid layout behavior.
sass/homeassistant/base/_global.scss	Adds responsive padding-top adjustments.
sass/homeassistant/base/_back_to_top.scss	New styles for back-to-top button.
sass/homeassistant/_overrides.scss	Major TOC styling overhaul; removes external-link icon CSS.
sass/homeassistant/_homeassistant.scss	Imports back-to-top styles.
plugins/output_modder.rb	Stops auto-appending external-link icons.
package-lock.json	Bumps Node dependencies (hono + node-server).
_config.yml	Updates Algolia key; bumps patch version + date.
Gemfile.lock	Bumps Ruby gems; adds ostruct.
Gemfile	Bumps sass-embedded/rubocop/ruby-lsp; adds ostruct.
.vscode/cSpell.json	Adds “Airobot” and “Saunum” to dictionary.
.gitignore	Ignores .claude directory.
.github/copilot-instructions.md	Adds inclusive language guidance entry.

---

You can also share your feedback on Copilot code review. Take the survey.

[LukasQ]

Created a new core PR as FUBAR-ed my local git config.