Gmail Unsubscriber vs MailMop

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.

MailMop is a Gmail inbox-cleaning tool for identifying clutter and managing messages in bulk. It groups clutter by sender and shows message counts, then provides actions such as deleting, blocking senders, unsubscribing, marking messages read, applying labels, and creating filters. Gmail headers are analyzed through the Gmail API; when message content is needed to locate unsubscribe links, processing occurs in the browser rather than on MailMop servers. The service says it handles inboxes up to 500,000 emails, while its FAQ states there is no processing limit. MailMop works with one inbox at a time, but one Pro subscription covers all of a user’s inboxes. Basic is free and includes unlimited analysis, sender statistics, unsubscribe, export, and Gmail links. Pro costs $1.89 a year, billed annually at $22.68/year, adding one-click bulk actions, bulk delete, advanced filtering and labels, and sender blocking. It is available on the web or can be self-hosted for free.