Gmail Quick Links от Kevin Wu

Adds a box to the left column that gives you 1-click access to any bookmarkable URL in Gmail. You can use it for saving frequent searches, important individual messages, and more.

Supports multiple logged-in gmail accounts, with ability to create quick links that work across all logged-in accounts.

Background: Google has decided to retire several Gmail Labs, including the Quick Links lab by Dan P. This extension is a replacement to the original lab and is heavily inspired by that original lab.

This extension is open source and can be viewed by clicking on the project website.