GMClean vs Trimbox

GMClean is a free, self-hosted web tool for scanning email headers, classifying messages, unsubscribing in bulk, deleting email, and exporting data. It works with Gmail, Outlook, and custom IMAP mailboxes, with up to 10 mailboxes connected at once. GMClean fetches headers such as sender, subject, and List-Unsubscribe details without downloading message bodies. It can scan INBOX, Spam, Promotions, Trash, and other IMAP folders. Inbox analysis includes a 0–100 health score based on five weighted factors, sender insights, and email age distribution. Classification uses heuristic rules, with optional Gemini assistance for ambiguous cases. Users can unsubscribe with one click using RFC 8058 support or unsubscribe in bulk; bulk deletion runs in batches of 500 messages. Exports include selected subscriptions with resubscribe links and scanned emails in CSV format. The project documents deployment with npm, Docker, or Docker Compose. It says app data stays in browser IndexedDB and there is no cloud database or telemetry. Credentials are encrypted with AES-256-CBC before storage, and setup requires an ENCRYPTION_SECRET. The repository is MIT-licensed.

Trimbox helps Gmail users reduce unwanted mail by finding mailing lists and older messages, then offering tools to unsubscribe, delete, and block future messages. Users can unsubscribe from a list with one action; if the list requires a formal request, Trimbox can send one. To clear older mail, users can delete messages from a sender in one action. Those messages move to Trash and are permanently removed after 30 days. Trimbox can also create editable Gmail filters to block unwanted senders. The maker says email data stays on the user’s device and is never shared, and that Trimbox is verified by Google. The service needs access to a Gmail account to find mailing lists and delete old junk mail. Trimbox is available as an extension, in a browser for Gmail, and as a mobile app on Android and iOS. The App Store listing says users can connect unlimited email accounts, but the free plan covers the first 10 unsubscribes; a subscription unlocks unlimited unsubscribes. The listed free plan is free.