Q: mail drop issue on iMac

so supposedly mail drop is supposed to allow you to email a file up to 5gb in size
so i attempted to email a friend a video that was 2gb in size and guess what it doesn't work....

i went through these steps to make sure that everything that needed to be up and on was working:

1. Click on the  menu and choose System Preferences.
2. Click on iCloud.
3. Sign in to your iCloud account if you aren't already.

Mail was checked ... still didnt work... Anyone else having this issue... if so, do you know a remedy?

Thanks