January 21: Clinton is sworn in as Secretary of State

March: Pagliano installs the server he has built in a rack in the Chappaqua house basement, with the help of Cooper. Pagliano, who is administrator for the new device, transfers the Apple server emails onto the new device. The new server is backed up once a week onto a Seagate external hard drive. The FBI has never obtained the Apple server for examination

18 March: Clinton stops using her BlackBerry email account and switches to the newly created hdr22@clintonemail.com account. The domain is hosted on her own private email server, set up by her aide Bryan Pagliano

June 23: A Platte employee removes the server from the Chappaqua home to a data center in Secaucus, New Jersey, run by Equinix, to migrate it to a new server

June 30: The Clintons’ email accounts are migrated to the Platte server

September 11, 2012: Four Americans are killed in attack on a U.S. base in Benghazi, Libya including Ambassador Chris Stevens

July 18: Platte signs an agreement to manage the new, third server, a Dell PowerEdge R620. Platte subsequently configure a backup device from Datto, Inc, a Connecticut-based company, to take multiple snapshots of the system daily and to store the information for 60 days. The device also takes copies of the Pagliano server between June 24-December 23
January 2013: Clinton’s chief of staff, Cheryll Mills, recommends Denver, Colorado-based IT firm Platte River Networks (PRN) to manage the server to help with user limitations and reliability concerns

February 1, 2013: Clinton steps down as secretary of state 

December 2013: The Pagliano server is fully decommissioned

October 28, 2014: State Department demands Clinton’s work-related correspondence as part of a congressional investigation into Benghazi

Fall 2014: Clinton’s lawyers delete 33,000 emails which they claim are ‘personal’ 

December 5, 2014: Clinton’s legal team provide roughly 30,000 emails to the State Department when they are demanded by a congressional investigation into Benghazi. 

December 2014: Clinton and Abedin begin using the domain hrcoffice and stop using clintonemail.com

March 2 2015: The New York Times breaks the news that Clinton used a personal email account to conduct government business while secretary of state

July 25, 2015: Clinton says she is confident none of the emails on her private email server were classified at the time of sending and receiving

August 4: The Washington Post reveals the FBI has begun looking into the security of Clinton’s private email set-up

September 10: Bryan Pagliano formally asserts his Fifth Amendment right against self-incrimination rather than answer questions from a Republican-led House committee on her email arrangements

October 3, 2015: The Pagliano server is voluntarily handed over to the FBI 

WikiLeaks

October 7: WikiLeaks begins release of thousands of emails hacked from the Gmail account of John Podesta, Clinton’s campaign chair

October 28: FBI reopens its investigation into Clinton’s server

July 6, 2016: The Justice Department closes Clinton email probe and FBI Director James Comey announces the FBI won’t prosecute. The decision was made by Comey because Attorney General Loretta Lynch had to recuse herself after a secret meeting with Bill Clinton