A challenge faced by both students and teachers is that of sending large files. The email service puts a limit to your attachment. One cannot send a very large file. Is there a solution? Yes there is. Just break up the large file into smaller pieces. The one receiving your small pieces of the original file can simply put them all together….no damage whatsoever to your original file!!! I've tried it with an operating system!!! Now an operating system is quite heavy and risky, yet it worked for me perfectly well. So it should work for you too. Obviously the program is free and open source. It works in windows, mac and linux...so what are you waiting for?!
The link to the program is here. You press split when you want to put it into smaller pieces and join when you receive them. You can determine the size of the file. You can try several sizes. Obviously instead of one email, you have to send several ones. But you'll be happy to communicate in this way as otherwise you have to be physically present in order to share some big files. Enjoy!