How to easily send a big file

No doubt you have had the same problem as me from time to time where you try to send data by email and you get a message back from the ISP that the attachment is too big. A business recipient, to whom I was trying to send (unsuccessfully) a large file said, "Why don't you use https://wetransfer.com ?" I tried it and it worked brilliantly. You can send up to 2GB for free or much larger files, up to 20GB at a time, for a charge. How come I have not heard about this before, or is it a case of, "Senior moment" and I have forgotten? Anyway, now I know (until I forget!)