Better known as P2P is where one person sends a file directly to another person (as long as both are online). There is no filesize limit. There is also no limit to the amount of time the send will wait before the receiving person picks up the file. You can set it to send, have it waiting, and send them the code. It'll wait until they get the code and enter it to pickup the file. Here is the link to this app:
It's also on the main menu under "Extras". You can scroll down on that menu and find it.