It's possible to specify a direct download link in Serv-U MFT for use with a web browser.
But unfortunately this does not work when the receiver is on a mobile device.
The download link seems to be lost when the web interface switches to mobile.
This is a major problem since you don't know when the receiver of the link will be on a mobile device.
The syntax of the direct web download is:
https://hostname/?user=username&password=password&file=filename.ext
I would very much have this to work on the mobile interface also.
