What online service exists for sending a file by email with an attachment?

Question

Email

The task is this, I have a computer at work, I am engaged in design, graphics ... but due to the specifics of the enterprise - it does not have access to the Internet. And it often happens that you need to transfer files from the Internet point, and in order not to insert a USB flash drive or send it by mail every time, you want such a service
In which, for example, there was some kind of large window into which you drag-n-drop threw files and he immediately sent them to a certain a box
something like a bridge would have turned out like this

Answer 1

And put a dropbox or Yandex disk, which links will give you public ... greatly simplifies the solution of the problem?