I'm bound for Europe in about a month and following the advice of my fellow FTers, I'm making copies of my important documents(passport, credit cards, etc.) as a backup in case the originals are lost. Some suggest emailing your backup documents to yourself for use in an emergency. I'm not entirely sold on the safety of email.

So, is it safer to email backup documents to yourself, or store them in a service like Dropbox?

Thanks for your help