Hooray! At least now I’ve a chance to redeem myself from sending emails without their attachments when I’m over excited. Well, I can’t help it having good relationship with a client so much so I type a nice email and forgot about the attachment. :P
But yes, Google has introduced an undo send function to Gmail. However, these are extensions which need to be enabled from the labs. If you want to access the extensions, go to your Gmail settings (top right menu) and click the Labs tab. You’ll find the undo send extension in there.

Besides the undo send, Google also has created an extension for you to preview YouTube or Flickr photos right from your email. Cools!
Hi Danny,
Thanks for d news. Bcos I make too many mistake like this. :)
LOL! Join the club, Alex. :P
Dude, that is awesome news! No more regretful emails to account for! Of course this won’t help if someone is using a reader like Outlook, since the message gets downloaded to their hard drive.
Hey, were is your RSS Feed button? I want to subscribe, but I can’t find the button.
Very true about Outlook, Nut. As for the RSS feed button, you caught me without a visual button. It’s on the top left as a text link but thanks for pointing this out to me. :)