Something like wesendit is more designed for delivering files to a recipient/recipients rather than hosting it for web access. If it works the same as similar sites I have used it requires a recipients email address. The answer you got on the other question offered viable solutions, using one of those is your best bet. Im not sure why security is a concern here (im assuming you meant to say dropbox isnt 'safe' enough), its a screen shot of an error message. Anything you link to here is going to have to be accessible to all anyway, no matter how you do it.