Gmail: Take Action on all messages in a label or section

Since I have almost used 50% of my gmail free space and I have more than 10 accounts in my gmail, I have been waiting for these changes. Thank you gmail.

Now you can apply the same action to all messages in a label or section of your account (Inbox, Sent Mail, Spam, Trash, etc.), in just a few steps. Use this feature to archive all mail in your Inbox, apply labels to every message meeting certain criteria, delete all messages in Spam or Trash, or apply a filter to all relevant messages in your account.