In 2015, Clinton will name this as the date she begins using a private email server and her email account firstname.lastname@example.org for government business. Around this time, she also allegedly stops using an email address she used as a senator: email@example.com, also known as firstname.lastname@example.org (AT&T and Cingular are the same company).
The Wall Street Journal will later report, “Messages from the account she used as a senator [prior to this date] are lost and could not be retrieved, her office said.”
She is said to keep the AT&T account working through September 2009, but she always replies from her clintonemail.com address. (The Wall Street Journal, 9/30/2015) (Buzzfeed, 7/1/2015) However, emails from as early as January 28, 2009 using her new private email address will later be found. (The New York Times, 9/25/2015)
The FBI’s Clinton investigation will later conclude that the FBI “did not recover any information indicating that Clinton sent an email from her email@example.com email after March 18, 2009.” (Federal Bureau of Investigation, 9/2/2016)