How To Mass Export All Of Your Facebook Friends' Private Email Addresses
A few days ago I requested that Facebook finally allow us to download email addresses for all of our friends. Facebook says this isn't allowed because you only own the data you add to Facebook, not data that your friends add.
Context & Ripple Effects
This workaround lands in the middle of a two-year-old standoff over contact data. Back in January 2008, Paul Buchheit asked whether Gmail, Yahoo, and Hotmail should block Facebook over exactly this asymmetry, and last week Facebook was again caught finding a new way to liberate Gmail contact data while refusing the reverse flow.
The stakes sharpen because Facebook's stated position — you only own the data you add yourself, so friends' email addresses are not yours to download — sits awkwardly beside its rumored Project Titan 'Gmail killer', reportedly launching Monday. A platform hoarding address-book entries while building its own mail client makes the one-way valve the whole story.
First-order effects
- Users who run the workaround can pull every friend's private email address out of Facebook today, directly defeating the policy Facebook articulated when refusing download requests.
- Google's Gmail sits on the losing side of the exchange for now: Facebook ingests its contacts freely while blocking the mirror-image export of the social graph.
Second-order effects
- Toolmakers have an obvious incentive to wrap this method into one-click browser extensions and scripts, forcing Facebook to choose between plugging each hole and quietly conceding the export capability.
- If the workaround spreads, Google gains leverage to demand reciprocity — restricting or gating Facebook's access to Gmail contacts unless friend-list export flows both ways.
Third-order effects
- The episode hardens the structural question of who owns a friendship's contact data: platforms claim added-by-others data, users claim their own relationships, and workarounds like this one turn that legal ambiguity into an enforcement arms race.
- If every major network ends up rationing exports by policy rather than by user right, data portability becomes something regulators and interoperability advocates, not platforms, will have to settle.
The trend: Contact-data portability is becoming an asymmetric standoff between social-graph owners and address-book providers, with user-built workarounds filling the gap official APIs refuse to close.