Gmail Unsubscriber vs Trimbox

Gmail Unsubscriber is a free, open-source Google Apps Script for unsubscribing from unwanted newsletters and other bulk email in Gmail. It looks through bulk messages for unsubscribe links and opens them; when a sender requires an email to unsubscribe, the script can send one to a special address. Setup involves copying a Google Sheet to Drive, configuring the script from Gmail's menu, and allowing it to access your Gmail account. Messages with the configured Gmail label are processed automatically, typically within 10–15 minutes, and the script records activity in the Sheet. You can add messages to the queue from Gmail on the web or mobile apps, Microsoft Outlook, or Apple Mail by applying the label or moving a message to the Unsubscribe folder as appropriate. The project uses Gmail labels and a Google Sheet and carries an MIT License. Its maker says the script runs without storing or uploading data and does not require access to a third-party service. The listed free plan costs nothing.

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.