I receive mail every day with some attachments and I want to download those attachments automatically when they arrive to my mail box. Is that possible? and if yes, how?
You can use the Save Gmail addon for Google Sheets. It runs as a background trigger that connects to Gmail in the background and automatically downloads the email attachments to Google Drive.
You can install the Google Drive client on your Windows PC / Mac and the drive file will instantly become available on your local disk.
(disclosure: I am the author of the Google addon)
I wrote an app called Unattach, which allows you to easily download Gmail attachments in bulk, and optionally remove them. It currently doesn't have a mode to run at a regular interval, but that could be added quite easily if needed.