Firefox has released a new beta file transfer service called Send. A file up to 2 GB can be shared to one person with a time limit of 24 hours. In other words, the file can be either downloaded once (by the person you share the download link to) or after 24 hours, it can no longer be downloaded. No registration required and while the file is in transit/the cloud, it is encrypted.

https://send.firefox.com/

Nice article about the service
https://www.howtogeek.com/321002/how...-firefox-send/