Undo Send. If you send an email to a wrong address, or write something you want to take back, Gmail give you 5 seconds to undo. Just be quick about it!
Forgotten Attachment Detector makes sure you never forget an attachment.
Consolidating outside email account inboxes into one Gmail account is now easier. Use the import options under settings to add other accounts, and you’ll be able to check all of your email in one place.