Gmail - New Feature: Send and Archive

Ever wanted to keep few message in your inbox, or archive the reply threads? Gmail's new feature -Send and Archive has the solution. Available under "Labs" tab, this feature when enabled, allows you to reply a message/ thread and archive it immediately, with a single click. This provides an additional button as "Send & Archive" just before "Send" button!

The "Undo" support is the next feature to "Send & Archive" as per Pal Takacsi, Engineering Manager