The feature is known as ‘Send’ and can be accessed at “send.firefox.com” portal. The server used for this service is private and encrypted, which means whatever you share remains confidential. The service portal is simple to use and does perform the task of carrying your files under 1GB for 24 hours, which can be accessed by anyone with the link to the file, and deletes automatically after 24 hours.
Here is how the Mozilla Send works:
Step 2: Drop your files, up to 1 GB, in dedicated uploading area
Step 3: Wait for your file to upload and go to encrypted server
Step 4: Copy the file link
Step 5: Share the link with people you wish to share your uploaded files with within 24 hours