Η Google trying to upgrade them services created a new feature for her gmail which will excite you. Adding new features to Gmail for a faster end user experience has created an amazing security measure.
If your email contains attachments and you do not want to download them to your computer for a variety of reasons (one of these is because you do not trust the sender) you can preview them without having to download them, but through Google Drive.
Gmail also added a new one choice managements, making it possible to send any file you received directly through it Google Drive, without having to come down to your computer.
The new features will be available next week.