Your work stays on your computer.

Video processing

CleanCut does not upload your media.

The video files you select are processed locally by the CleanCut engine bundled inside the Mac application. Audio extraction, AI transcription, profanity matching, subtitle generation, and video conversion happen on your computer.

CleanCut does not send your video, audio, transcript, subtitle text, filenames, or detected words to Envelopes or an AI service.

PolishKey text rewrites

PolishKey rewrites selected text locally.

The text you select for a rewrite is sent to the local model provider configured on your computer. The Apple Silicon Mac build bundles the local runtime and default model cache so rewriting does not require sending drafts to an Envelopes cloud AI service.

PolishKey does not send selected text, rewritten text, clipboard contents, app names, or surrounding document content to Envelopes for AI processing.

Network connections

The app connects for two narrow purposes.

License activation and validation

When you activate, validate, or remove a paid license, CleanCut or PolishKey contacts Polar's customer license service. The request includes the license key, activation identifier, app/platform labels, and a hashed machine identifier used to enforce the one-computer activation limit.

Update checks and downloads

Toolshelf apps check their public EnvelopesApp GitHub Releases feed to see whether a newer signed version exists. If you choose to update, your browser downloads the notarized installer from GitHub.

If either service is unavailable, your media or selected text remains local. A temporary network failure does not upload work or hand processing to a remote fallback.

Local settings

Preferences and activation state stay in Application Support.

CleanCut and PolishKey store app preferences, free-trial usage, and license activation state on your Mac. Replacing the app during an update does not normally remove this information.

To release a computer's activation, use the Remove or Deactivate option in the app's Settings while connected to the internet.

This website

A static site hosted by GitHub Pages.

This website does not contain an Envelopes account system or advertising tracker. GitHub may process standard request information when serving the pages and release downloads. Purchases are completed through Polar, which acts as the online reseller and merchant of record and applies its own buyer and privacy terms.

Opening an email support link uses your email provider. Information you send in a support message is used to respond to the request. Do not send private source videos unless support specifically asks for a sample and you are comfortable sharing it.

Questions

Ask us about your data.

Email Envelopes.app.com@gmail.com with privacy questions or requests relating to information you previously sent to support.

Last updated: June 19, 2026.