Large file transfer is big business. Anyone who has tried to attach heftier files to an email will soon want a better way. Dropbox is an excellent option, as is ge.tt, wetransfer or hightail. One Time Box represents interesting new look a fresh look at the underlying use-case. Just set up a 'box', upload your files into it and email the link to the recipient. No need to part with contact details or anything else. The service is free, with a total file size limit of 1GB, and uploaded files last one week.