Facebook's director of developer platforms and programs Konstantinos Papamiltiadis told AFP last week that the company "has never sold anyone's data".
Facebook has been keen to keep the documents out of the public realm - they are also now held under seal by a court in California - but last week Collins said Parliament would publish them if it felt it was in the public interest to do so.
A British parliamentary committee accused Facebook on Wednesday of giving companies such as Netflix preferential access to users' data even after it tightened its privacy rules in 2014-15. The idea of tying access to this data to the developer's relationship with Facebook is a recurring feature throughout the documents.
"For most developers, we also limited their ability to request a list of who someone's friends were, unless those friends were also using the developer's app".
The company also pushed back on this point, characterizing the emails as "cherrypicked" and adding: "Instead of requiring developers to buy advertising - we ultimately settled on a model where developers did not need to purchase advertising to access APIs and we continued to provide the developer platform for free".
The documents are thought to contain emails from Mark Zuckerberg.
They include emails sent to and from Facebook CEO Mark Zuckerberg and other senior Facebook executives.
Four big differences that could endanger Trump and Xi's trade deal
Despite the positive talks so far, these policies will likely cause the most issues nearing the 90-day deadline. China has agreed to reduce and remove tariffs on cars coming into China from the U.S. now the tariff is 40%.
-Facebook used Onavo (an Israeli analytics company it bought in 2013) to check customers' usage of mobile apps without their knowledge.
In one email, dated January 23 2013, a Facebook engineer contacted Zuckerberg to say that rival Twitter Inc. had launched its Vine video-sharing tool, which users could connect to Facebook to find their friends there.
Facebook, which has described the Six4Three case as baseless, said the released communications are misleading without additional context, but did not elaborate.
"We've prepared reactive PR", Osofsky wrote, to which Zuckerberg replied, "Yup, go for it".
Facebook could not immediately be reached for comment.
The increased exposure of private data generated more revenue for app developers, and this outcome was the key driver behind the changes made by Facebook. "I hope that our committee investigation can stand up for them".