EU Dropbox customers are the customers of Dropbox Ireland Limited (a company registered in Ireland), not Dropbox, Inc., a company registered in Delaware, so actually all of the EU regulations apply to their EU customers.
Source: I'm a paying Dropbox customer living in the UK and my invoices are issued by Dropbox Ireland Limited.
Where
Around the world. To provide you with the Services, we may store, process and transmit information in the United States and locations around the world - including those outside your country. Information may also be stored locally on the devices you use to access the Services.
Safe Harbor. Dropbox complies with the EU-U.S. and Swiss-U.S. Safe Harbor ("Safe Harbor") frameworks and principles. We have certified our compliance, and you can view our certifications here. You can learn more about Safe Harbor by visiting http://export.gov/safeharbor. JAMS is the independent organization responsible for reviewing and resolving complaints about our Safe Harbor compliance. We ask that you first submit any such complaints directly to us via privacy@dropbox.com. If you aren't satisfied with our response, please contact JAMS at http://www.jamsinternational.com/rules-procedures/safeharbor....
NOTE: When transferring data from the European Union, the European Economic Area, and Switzerland, Dropbox relies upon a variety of legal mechanisms, including contracts with our users. Dropbox doesn’t rely upon Safe Harbor as a legal basis for data transfer but does adhere to the Safe Harbor Privacy Principles while specific guidance for the forthcoming EU-US Privacy Shield program is developed. For information about data transfers from Europe to the United States, please visit this page.
Source: I'm a paying Dropbox customer living in the UK and my invoices are issued by Dropbox Ireland Limited.