Gmail Unsubscriber vs GoodByEmail

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.

GoodByEmail analyzes an exported inbox to show which senders use storage and help users decide what to clean up. Users import an MBOX or Outlook PST file, then filter or sort senders by storage, email count or last received date. The app can identify mailing-list senders and supports one-click unsubscribing. It does not scan or delete messages automatically: users export their inbox and remove selected emails in their email client. The maker says mailbox processing happens locally, without uploading or storing email content, metadata or mailbox statistics on its servers. Scanning can work offline after an online login unlocks the app. The free version shows unordered results for everyone who has emailed the user; actionable cleanup insights require a license. Paid options include Lite at $9.99 a month, Plus at $14.99 a month and Pro at $19.99 a month. A Perpetual license costs $199 as a one-time purchase. The platform list includes macOS, Windows and self-hosted.