Let’s guess, they are “lost”…
Check it out:

The House Select Committee on Benghazi announced Wednesday it has sent subpoenas to former Secretary of State Hillary Clinton and the State Department in an effort to find all outstanding emails related to the 2012 attack in Benghazi that left four Americans dead.

“The Select Committee on Benghazi today issued subpoenas for all communications of former Secretary of State Hillary Clinton related to Libya and to the State Department for other individuals who have information pertinent to the investigation,” committee spokesman Jamal Ware said. “The committee also has issued preservation letters to internet firms informing them of their legal obligation to protect all relevant documents.”