This way your transfer will be available for as long as you like (the same goes for all of your future transfers).
If you want to learn more about the benefits of upgrading to Plus, take a look at the other Plus features here. For help with your Plus account, you can contact us at plus@wetransfer.com
We hope you decide to join the WeTransfer Plus family soon, but if you don't we'll love you anyway ;)
The WeTransfer Team