Block Sender

Block Sender is a Chrome extension that allows users to block annoying emails in Gmail. It offers a simple one-click solution to permanently block unwanted newsletters, individuals, and other email senders. The extension creates a fake "This email address doesn't exist" error message to appear in the sender's inbox, ensuring that they are unaware that their messages are being blocked. In addition to blocking email addresses, the extension also allows users to block domains, subject lines, and keywords. Block Sender has both a free plan and an unlimited use plan, with the option to upgrade for advanced features.