At the first announcement, positioned itself as an alternative mail service with identical principle, archive them and never delete. This was because of its large startup space at 1 GB. Anyway, time proved that 1 GB were not enough for junk mails and especially forwarded mails including me. There are lots of unnecessary mails in my mailbox. I don"t want to use it anymore so I definitely want to permanently remove them all as fast as I can.

Last week, I still have to move them to the trash and then remove them out of the trash again. Eventually, Gmail just adding so I can directly remove mails in one step. Many people thought this should be done early! It seems Google can"t provide enough space for everybody just in time so this button might be a good workaround.