Google announced yesterday the integration of add-ons with Gmail.. These are third party tools used to add more functionalities to Gmail. The same concept was already applied to Google Drive services such as Sheets, Docs and recently Slides. Gmail add-ons are introduced with the purpose of enhancing your workflow, ‘rather than toggling between your inbox and other apps, use add-ons to complete actions right from Gmail. With Gmail Add-ons, your inbox can contextually surface your go-to app based on messages you receive to help you get things done faster.