Clone of deleted "Wait, Google Sent Me" extension for Chrome. - https://chrome.google.com/webstore/detail/igloabeeeiagmdkhellmibpnlnjdmdbb
All credit goes to the original author, jashkenas. - https://news.ycombinator.com/item?id=9531941.
- Download this extension, either by cloning the repository or downloading the archive.
- If you downloaded the archive unzip it.
- Navigate to chrome://extensions.
- Expand the Developer dropdown menu and click “Load Unpacked Extension”.
- Navigate to the local folder containing the extension’s code and click Ok.