There are many files that WhatsApp doesn’t support and because of majority of today are using WhatsApp for daily work,It is very difficult to send files to one from another user from you WhatsApp.
Steg an App that allow you to send files through WhatsApp,It allow unlimited files sharing from your chat to another user from WhatsApp without any hassle that force you to use another app like Mail and Drive.
You just need to install app from Playstore “Steg”,and that’s it,whatever you want to share with your WhatsApp share from Steg instead.
It is very easy to use,Make sure both user have to install Steg first.
You can see step by step process from below video.